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Finding the Fourth Proportional to 15,957.89, 22,018.54 and 9,243.11

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Solution

The fourth proportional to 15,957.89, 22,018.54 and 9,243.11 is: 12,753.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,957.89 : 22,018.54 = 9,243.11 : x
  2. Step 2: Convert to fraction form
    15,957.89/22,018.54 = 9,243.11/x
  3. Step 3: Cross multiply
    15,957.89x = 22,018.54 × 9,243.11
  4. Step 4: Simplify right side
    15,957.89x = 203,519,787.26
  5. Step 5: Solve for x
    x = 203,519,787.26/15,957.89
  6. Step 6: Final answer
    x = 12,753.55

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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.