Home / 13,545.09-18,691.80-7,576.86

Finding the Fourth Proportional to 13,545.09, 18,691.80 and 7,576.86

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Solution

The fourth proportional to 13,545.09, 18,691.80 and 7,576.86 is: 10,455.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.09 : 18,691.80 = 7,576.86 : x
  2. Step 2: Convert to fraction form
    13,545.09/18,691.80 = 7,576.86/x
  3. Step 3: Cross multiply
    13,545.09x = 18,691.80 × 7,576.86
  4. Step 4: Simplify right side
    13,545.09x = 141,625,151.75
  5. Step 5: Solve for x
    x = 141,625,151.75/13,545.09
  6. Step 6: Final answer
    x = 10,455.83

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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.