Home / 20,959,721.80-28,924,119.78-11,792,342.68

Finding the Fourth Proportional to 20,959,721.80, 28,924,119.78 and 11,792,342.68

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Solution

The fourth proportional to 20,959,721.80, 28,924,119.78 and 11,792,342.68 is: 16,273,266.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,959,721.80 : 28,924,119.78 = 11,792,342.68 : x
  2. Step 2: Convert to fraction form
    20,959,721.80/28,924,119.78 = 11,792,342.68/x
  3. Step 3: Cross multiply
    20,959,721.80x = 28,924,119.78 × 11,792,342.68
  4. Step 4: Simplify right side
    20,959,721.80x = 341,083,132,163,126.19
  5. Step 5: Solve for x
    x = 341,083,132,163,126.19/20,959,721.80
  6. Step 6: Final answer
    x = 16,273,266.19

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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.