Home / 12,715.32-17,545.50-7,126.32

Finding the Fourth Proportional to 12,715.32, 17,545.50 and 7,126.32

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Solution

The fourth proportional to 12,715.32, 17,545.50 and 7,126.32 is: 9,833.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,715.32 : 17,545.50 = 7,126.32 : x
  2. Step 2: Convert to fraction form
    12,715.32/17,545.50 = 7,126.32/x
  3. Step 3: Cross multiply
    12,715.32x = 17,545.50 × 7,126.32
  4. Step 4: Simplify right side
    12,715.32x = 125,034,847.56
  5. Step 5: Solve for x
    x = 125,034,847.56/12,715.32
  6. Step 6: Final answer
    x = 9,833.40

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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.