Home / 20,374,789.86-28,116,617.67-11,207,430.18

Finding the Fourth Proportional to 20,374,789.86, 28,116,617.67 and 11,207,430.18

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Solution

The fourth proportional to 20,374,789.86, 28,116,617.67 and 11,207,430.18 is: 15,465,927.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,374,789.86 : 28,116,617.67 = 11,207,430.18 : x
  2. Step 2: Convert to fraction form
    20,374,789.86/28,116,617.67 = 11,207,430.18/x
  3. Step 3: Cross multiply
    20,374,789.86x = 28,116,617.67 × 11,207,430.18
  4. Step 4: Simplify right side
    20,374,789.86x = 315,115,029,434,279.31
  5. Step 5: Solve for x
    x = 315,115,029,434,279.31/20,374,789.86
  6. Step 6: Final answer
    x = 15,465,927.83

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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.