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Finding the Fourth Proportional to 11,947.46, 16,487.14 and 6,642.14

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Solution

The fourth proportional to 11,947.46, 16,487.14 and 6,642.14 is: 9,165.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,947.46 : 16,487.14 = 6,642.14 : x
  2. Step 2: Convert to fraction form
    11,947.46/16,487.14 = 6,642.14/x
  3. Step 3: Cross multiply
    11,947.46x = 16,487.14 × 6,642.14
  4. Step 4: Simplify right side
    11,947.46x = 109,509,892.08
  5. Step 5: Solve for x
    x = 109,509,892.08/11,947.46
  6. Step 6: Final answer
    x = 9,165.96

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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.