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Finding the Fourth Proportional to 18,887.92, 28,328.04 and 17,951.20

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Solution

The fourth proportional to 18,887.92, 28,328.04 and 17,951.20 is: 26,923.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887.92 : 28,328.04 = 17,951.20 : x
  2. Step 2: Convert to fraction form
    18,887.92/28,328.04 = 17,951.20/x
  3. Step 3: Cross multiply
    18,887.92x = 28,328.04 × 17,951.20
  4. Step 4: Simplify right side
    18,887.92x = 508,522,311.65
  5. Step 5: Solve for x
    x = 508,522,311.65/18,887.92
  6. Step 6: Final answer
    x = 26,923.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.