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Finding the Fourth Proportional to 18,750.66, 25,874.84 and 10,251.20

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Solution

The fourth proportional to 18,750.66, 25,874.84 and 10,251.20 is: 14,146.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,750.66 : 25,874.84 = 10,251.20 : x
  2. Step 2: Convert to fraction form
    18,750.66/25,874.84 = 10,251.20/x
  3. Step 3: Cross multiply
    18,750.66x = 25,874.84 × 10,251.20
  4. Step 4: Simplify right side
    18,750.66x = 265,248,177.35
  5. Step 5: Solve for x
    x = 265,248,177.35/18,750.66
  6. Step 6: Final answer
    x = 14,146.07

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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.