Home / 18,265.50-27,398.70-5,118.90

Finding the Fourth Proportional to 18,265.50, 27,398.70 and 5,118.90

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Solution

The fourth proportional to 18,265.50, 27,398.70 and 5,118.90 is: 7,678.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,265.50 : 27,398.70 = 5,118.90 : x
  2. Step 2: Convert to fraction form
    18,265.50/27,398.70 = 5,118.90/x
  3. Step 3: Cross multiply
    18,265.50x = 27,398.70 × 5,118.90
  4. Step 4: Simplify right side
    18,265.50x = 140,251,205.43
  5. Step 5: Solve for x
    x = 140,251,205.43/18,265.50
  6. Step 6: Final answer
    x = 7,678.48

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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.