Home / 13,442.15-18,545.76-8,135.03

Finding the Fourth Proportional to 13,442.15, 18,545.76 and 8,135.03

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Solution

The fourth proportional to 13,442.15, 18,545.76 and 8,135.03 is: 11,223.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,442.15 : 18,545.76 = 8,135.03 : x
  2. Step 2: Convert to fraction form
    13,442.15/18,545.76 = 8,135.03/x
  3. Step 3: Cross multiply
    13,442.15x = 18,545.76 × 8,135.03
  4. Step 4: Simplify right side
    13,442.15x = 150,870,360.34
  5. Step 5: Solve for x
    x = 150,870,360.34/13,442.15
  6. Step 6: Final answer
    x = 11,223.68

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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.