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Finding the Fourth Proportional to 12,787.96, 17,646.12 and 9,432.58

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Solution

The fourth proportional to 12,787.96, 17,646.12 and 9,432.58 is: 13,016.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787.96 : 17,646.12 = 9,432.58 : x
  2. Step 2: Convert to fraction form
    12,787.96/17,646.12 = 9,432.58/x
  3. Step 3: Cross multiply
    12,787.96x = 17,646.12 × 9,432.58
  4. Step 4: Simplify right side
    12,787.96x = 166,448,438.59
  5. Step 5: Solve for x
    x = 166,448,438.59/12,787.96
  6. Step 6: Final answer
    x = 13,016.03

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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.