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Finding the Fourth Proportional to 18,752.13, 28,119.98 and 8,894.22

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Solution

The fourth proportional to 18,752.13, 28,119.98 and 8,894.22 is: 13,337.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,752.13 : 28,119.98 = 8,894.22 : x
  2. Step 2: Convert to fraction form
    18,752.13/28,119.98 = 8,894.22/x
  3. Step 3: Cross multiply
    18,752.13x = 28,119.98 × 8,894.22
  4. Step 4: Simplify right side
    18,752.13x = 250,105,288.52
  5. Step 5: Solve for x
    x = 250,105,288.52/18,752.13
  6. Step 6: Final answer
    x = 13,337.43

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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.