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Finding the Fourth Proportional to 18,894.87, 28,348.45 and 9,034.88

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Solution

The fourth proportional to 18,894.87, 28,348.45 and 9,034.88 is: 13,555.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,894.87 : 28,348.45 = 9,034.88 : x
  2. Step 2: Convert to fraction form
    18,894.87/28,348.45 = 9,034.88/x
  3. Step 3: Cross multiply
    18,894.87x = 28,348.45 × 9,034.88
  4. Step 4: Simplify right side
    18,894.87x = 256,124,679.61
  5. Step 5: Solve for x
    x = 256,124,679.61/18,894.87
  6. Step 6: Final answer
    x = 13,555.25

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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.