Home / 20,565.87-28,354.49-16,868.72

Finding the Fourth Proportional to 20,565.87, 28,354.49 and 16,868.72

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Solution

The fourth proportional to 20,565.87, 28,354.49 and 16,868.72 is: 23,257.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,565.87 : 28,354.49 = 16,868.72 : x
  2. Step 2: Convert to fraction form
    20,565.87/28,354.49 = 16,868.72/x
  3. Step 3: Cross multiply
    20,565.87x = 28,354.49 × 16,868.72
  4. Step 4: Simplify right side
    20,565.87x = 478,304,002.35
  5. Step 5: Solve for x
    x = 478,304,002.35/20,565.87
  6. Step 6: Final answer
    x = 23,257.18

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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.