Home / 20,617.13-28,423.91-16,382.25

Finding the Fourth Proportional to 20,617.13, 28,423.91 and 16,382.25

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Solution

The fourth proportional to 20,617.13, 28,423.91 and 16,382.25 is: 22,585.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617.13 : 28,423.91 = 16,382.25 : x
  2. Step 2: Convert to fraction form
    20,617.13/28,423.91 = 16,382.25/x
  3. Step 3: Cross multiply
    20,617.13x = 28,423.91 × 16,382.25
  4. Step 4: Simplify right side
    20,617.13x = 465,647,640.55
  5. Step 5: Solve for x
    x = 465,647,640.55/20,617.13
  6. Step 6: Final answer
    x = 22,585.47

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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.