Home / 20,545.66-28,352.91-11,114.20

Finding the Fourth Proportional to 20,545.66, 28,352.91 and 11,114.20

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Solution

The fourth proportional to 20,545.66, 28,352.91 and 11,114.20 is: 15,337.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.66 : 28,352.91 = 11,114.20 : x
  2. Step 2: Convert to fraction form
    20,545.66/28,352.91 = 11,114.20/x
  3. Step 3: Cross multiply
    20,545.66x = 28,352.91 × 11,114.20
  4. Step 4: Simplify right side
    20,545.66x = 315,119,912.32
  5. Step 5: Solve for x
    x = 315,119,912.32/20,545.66
  6. Step 6: Final answer
    x = 15,337.54

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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.