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Finding the Fourth Proportional to 18,751.70, 25,876.87 and 10,253.86

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Solution

The fourth proportional to 18,751.70, 25,876.87 and 10,253.86 is: 14,150.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751.70 : 25,876.87 = 10,253.86 : x
  2. Step 2: Convert to fraction form
    18,751.70/25,876.87 = 10,253.86/x
  3. Step 3: Cross multiply
    18,751.70x = 25,876.87 × 10,253.86
  4. Step 4: Simplify right side
    18,751.70x = 265,337,711.89
  5. Step 5: Solve for x
    x = 265,337,711.89/18,751.70
  6. Step 6: Final answer
    x = 14,150.06

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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.