Home / 20,545.32-28,352.34-11,113.68

Finding the Fourth Proportional to 20,545.32, 28,352.34 and 11,113.68

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Solution

The fourth proportional to 20,545.32, 28,352.34 and 11,113.68 is: 15,336.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.32 : 28,352.34 = 11,113.68 : x
  2. Step 2: Convert to fraction form
    20,545.32/28,352.34 = 11,113.68/x
  3. Step 3: Cross multiply
    20,545.32x = 28,352.34 × 11,113.68
  4. Step 4: Simplify right side
    20,545.32x = 315,098,834.01
  5. Step 5: Solve for x
    x = 315,098,834.01/20,545.32
  6. Step 6: Final answer
    x = 15,336.77

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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.