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Finding the Fourth Proportional to 8,679.92, 13,012.57 and 7,032.38

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Solution

The fourth proportional to 8,679.92, 13,012.57 and 7,032.38 is: 10,542.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.92 : 13,012.57 = 7,032.38 : x
  2. Step 2: Convert to fraction form
    8,679.92/13,012.57 = 7,032.38/x
  3. Step 3: Cross multiply
    8,679.92x = 13,012.57 × 7,032.38
  4. Step 4: Simplify right side
    8,679.92x = 91,509,337.02
  5. Step 5: Solve for x
    x = 91,509,337.02/8,679.92
  6. Step 6: Final answer
    x = 10,542.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.