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Finding the Fourth Proportional to 15,957.84, 22,022.10 and 8,787.72

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Solution

The fourth proportional to 15,957.84, 22,022.10 and 8,787.72 is: 12,127.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,957.84 : 22,022.10 = 8,787.72 : x
  2. Step 2: Convert to fraction form
    15,957.84/22,022.10 = 8,787.72/x
  3. Step 3: Cross multiply
    15,957.84x = 22,022.10 × 8,787.72
  4. Step 4: Simplify right side
    15,957.84x = 193,524,048.61
  5. Step 5: Solve for x
    x = 193,524,048.61/15,957.84
  6. Step 6: Final answer
    x = 12,127.21

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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.