Home / 15,802.29-21,787.38-10,127.70

Finding the Fourth Proportional to 15,802.29, 21,787.38 and 10,127.70

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Solution

The fourth proportional to 15,802.29, 21,787.38 and 10,127.70 is: 13,963.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,802.29 : 21,787.38 = 10,127.70 : x
  2. Step 2: Convert to fraction form
    15,802.29/21,787.38 = 10,127.70/x
  3. Step 3: Cross multiply
    15,802.29x = 21,787.38 × 10,127.70
  4. Step 4: Simplify right side
    15,802.29x = 220,656,048.43
  5. Step 5: Solve for x
    x = 220,656,048.43/15,802.29
  6. Step 6: Final answer
    x = 13,963.55

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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.