Home / 13,545.20-18,703.90-8,517.82

Finding the Fourth Proportional to 13,545.20, 18,703.90 and 8,517.82

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Solution

The fourth proportional to 13,545.20, 18,703.90 and 8,517.82 is: 11,761.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.20 : 18,703.90 = 8,517.82 : x
  2. Step 2: Convert to fraction form
    13,545.20/18,703.90 = 8,517.82/x
  3. Step 3: Cross multiply
    13,545.20x = 18,703.90 × 8,517.82
  4. Step 4: Simplify right side
    13,545.20x = 159,316,453.50
  5. Step 5: Solve for x
    x = 159,316,453.50/13,545.20
  6. Step 6: Final answer
    x = 11,761.84

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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.