Home / 20,876,724,048.35-28,815,950,026.24-13,643,859,590.21

Finding the Fourth Proportional to 20,876,724,048.35, 28,815,950,026.24 and 13,643,859,590.21

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Solution

The fourth proportional to 20,876,724,048.35, 28,815,950,026.24 and 13,643,859,590.21 is: 18,832,493,795.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,876,724,048.35 : 28,815,950,026.24 = 13,643,859,590.21 : x
  2. Step 2: Convert to fraction form
    20,876,724,048.35/28,815,950,026.24 = 13,643,859,590.21/x
  3. Step 3: Cross multiply
    20,876,724,048.35x = 28,815,950,026.24 × 13,643,859,590.21
  4. Step 4: Simplify right side
    20,876,724,048.35x = 393,160,776,116,341,702,656
  5. Step 5: Solve for x
    x = 393,160,776,116,341,702,656/20,876,724,048.35
  6. Step 6: Final answer
    x = 18,832,493,795.76

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.