Home / 13,479,917.40-20,219,876.10-8,378,083.80

Finding the Fourth Proportional to 13,479,917.40, 20,219,876.10 and 8,378,083.80

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Solution

The fourth proportional to 13,479,917.40, 20,219,876.10 and 8,378,083.80 is: 12,567,125.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479,917.40 : 20,219,876.10 = 8,378,083.80 : x
  2. Step 2: Convert to fraction form
    13,479,917.40/20,219,876.10 = 8,378,083.80/x
  3. Step 3: Cross multiply
    13,479,917.40x = 20,219,876.10 × 8,378,083.80
  4. Step 4: Simplify right side
    13,479,917.40x = 169,403,816,391,417.19
  5. Step 5: Solve for x
    x = 169,403,816,391,417.19/13,479,917.40
  6. Step 6: Final answer
    x = 12,567,125.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.