Home / 20,565.16-28,385.22-12,069.16

Finding the Fourth Proportional to 20,565.16, 28,385.22 and 12,069.16

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Solution

The fourth proportional to 20,565.16, 28,385.22 and 12,069.16 is: 16,658.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,565.16 : 28,385.22 = 12,069.16 : x
  2. Step 2: Convert to fraction form
    20,565.16/28,385.22 = 12,069.16/x
  3. Step 3: Cross multiply
    20,565.16x = 28,385.22 × 12,069.16
  4. Step 4: Simplify right side
    20,565.16x = 342,585,761.82
  5. Step 5: Solve for x
    x = 342,585,761.82/20,565.16
  6. Step 6: Final answer
    x = 16,658.55

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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.