Home / 18,728.10-25,792.16-18,319.86

Finding the Fourth Proportional to 18,728.10, 25,792.16 and 18,319.86

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Solution

The fourth proportional to 18,728.10, 25,792.16 and 18,319.86 is: 25,229.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,728.10 : 25,792.16 = 18,319.86 : x
  2. Step 2: Convert to fraction form
    18,728.10/25,792.16 = 18,319.86/x
  3. Step 3: Cross multiply
    18,728.10x = 25,792.16 × 18,319.86
  4. Step 4: Simplify right side
    18,728.10x = 472,508,668.70
  5. Step 5: Solve for x
    x = 472,508,668.70/18,728.10
  6. Step 6: Final answer
    x = 25,229.93

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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.