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Finding the Fourth Proportional to 18,249.71, 27,374.36 and 7,148.52

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Solution

The fourth proportional to 18,249.71, 27,374.36 and 7,148.52 is: 10,722.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,249.71 : 27,374.36 = 7,148.52 : x
  2. Step 2: Convert to fraction form
    18,249.71/27,374.36 = 7,148.52/x
  3. Step 3: Cross multiply
    18,249.71x = 27,374.36 × 7,148.52
  4. Step 4: Simplify right side
    18,249.71x = 195,686,124.20
  5. Step 5: Solve for x
    x = 195,686,124.20/18,249.71
  6. Step 6: Final answer
    x = 10,722.70

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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.