Home / 20,685.92-28,545.96-11,734.24

Finding the Fourth Proportional to 20,685.92, 28,545.96 and 11,734.24

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Solution

The fourth proportional to 20,685.92, 28,545.96 and 11,734.24 is: 16,192.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,685.92 : 28,545.96 = 11,734.24 : x
  2. Step 2: Convert to fraction form
    20,685.92/28,545.96 = 11,734.24/x
  3. Step 3: Cross multiply
    20,685.92x = 28,545.96 × 11,734.24
  4. Step 4: Simplify right side
    20,685.92x = 334,965,145.67
  5. Step 5: Solve for x
    x = 334,965,145.67/20,685.92
  6. Step 6: Final answer
    x = 16,192.91

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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.