Home / 10,138.11-13,982.90-8,724.17

Finding the Fourth Proportional to 10,138.11, 13,982.90 and 8,724.17

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Solution

The fourth proportional to 10,138.11, 13,982.90 and 8,724.17 is: 12,032.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,138.11 : 13,982.90 = 8,724.17 : x
  2. Step 2: Convert to fraction form
    10,138.11/13,982.90 = 8,724.17/x
  3. Step 3: Cross multiply
    10,138.11x = 13,982.90 × 8,724.17
  4. Step 4: Simplify right side
    10,138.11x = 121,989,083.16
  5. Step 5: Solve for x
    x = 121,989,083.16/10,138.11
  6. Step 6: Final answer
    x = 12,032.72

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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.