Home / 13,442.38-18,545.51-8,135.26

Finding the Fourth Proportional to 13,442.38, 18,545.51 and 8,135.26

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Solution

The fourth proportional to 13,442.38, 18,545.51 and 8,135.26 is: 11,223.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,442.38 : 18,545.51 = 8,135.26 : x
  2. Step 2: Convert to fraction form
    13,442.38/18,545.51 = 8,135.26/x
  3. Step 3: Cross multiply
    13,442.38x = 18,545.51 × 8,135.26
  4. Step 4: Simplify right side
    13,442.38x = 150,872,519.66
  5. Step 5: Solve for x
    x = 150,872,519.66/13,442.38
  6. Step 6: Final answer
    x = 11,223.65

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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.