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Finding the Fourth Proportional to 11,439.01, 15,787.88 and 8,304.31

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Solution

The fourth proportional to 11,439.01, 15,787.88 and 8,304.31 is: 11,461.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.01 : 15,787.88 = 8,304.31 : x
  2. Step 2: Convert to fraction form
    11,439.01/15,787.88 = 8,304.31/x
  3. Step 3: Cross multiply
    11,439.01x = 15,787.88 × 8,304.31
  4. Step 4: Simplify right side
    11,439.01x = 131,107,449.76
  5. Step 5: Solve for x
    x = 131,107,449.76/11,439.01
  6. Step 6: Final answer
    x = 11,461.43

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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.