Home / 20,937,776.77-28,874,637.89-13,587,750.91

Finding the Fourth Proportional to 20,937,776.77, 28,874,637.89 and 13,587,750.91

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Solution

The fourth proportional to 20,937,776.77, 28,874,637.89 and 13,587,750.91 is: 18,738,445.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937,776.77 : 28,874,637.89 = 13,587,750.91 : x
  2. Step 2: Convert to fraction form
    20,937,776.77/28,874,637.89 = 13,587,750.91/x
  3. Step 3: Cross multiply
    20,937,776.77x = 28,874,637.89 × 13,587,750.91
  4. Step 4: Simplify right side
    20,937,776.77x = 392,341,387,121,394.75
  5. Step 5: Solve for x
    x = 392,341,387,121,394.75/20,937,776.77
  6. Step 6: Final answer
    x = 18,738,445.42

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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.