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Finding the Fourth Proportional to 10,671.12, 15,901.92 and 10,318.32

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Solution

The fourth proportional to 10,671.12, 15,901.92 and 10,318.32 is: 15,376.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,671.12 : 15,901.92 = 10,318.32 : x
  2. Step 2: Convert to fraction form
    10,671.12/15,901.92 = 10,318.32/x
  3. Step 3: Cross multiply
    10,671.12x = 15,901.92 × 10,318.32
  4. Step 4: Simplify right side
    10,671.12x = 164,081,099.17
  5. Step 5: Solve for x
    x = 164,081,099.17/10,671.12
  6. Step 6: Final answer
    x = 15,376.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.