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Finding the Fourth Proportional to 9,158.38, 13,715.16 and 8,270.91

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Solution

The fourth proportional to 9,158.38, 13,715.16 and 8,270.91 is: 12,386.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,158.38 : 13,715.16 = 8,270.91 : x
  2. Step 2: Convert to fraction form
    9,158.38/13,715.16 = 8,270.91/x
  3. Step 3: Cross multiply
    9,158.38x = 13,715.16 × 8,270.91
  4. Step 4: Simplify right side
    9,158.38x = 113,436,854.00
  5. Step 5: Solve for x
    x = 113,436,854.00/9,158.38
  6. Step 6: Final answer
    x = 12,386.13

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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.