Home / 20,565.46-28,378.72-11,613.85

Finding the Fourth Proportional to 20,565.46, 28,378.72 and 11,613.85

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Solution

The fourth proportional to 20,565.46, 28,378.72 and 11,613.85 is: 16,026.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,565.46 : 28,378.72 = 11,613.85 : x
  2. Step 2: Convert to fraction form
    20,565.46/28,378.72 = 11,613.85/x
  3. Step 3: Cross multiply
    20,565.46x = 28,378.72 × 11,613.85
  4. Step 4: Simplify right side
    20,565.46x = 329,586,140.84
  5. Step 5: Solve for x
    x = 329,586,140.84/20,565.46
  6. Step 6: Final answer
    x = 16,026.20

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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.