Home / 18,990.18-28,446.98-15,901.06

Finding the Fourth Proportional to 18,990.18, 28,446.98 and 15,901.06

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Solution

The fourth proportional to 18,990.18, 28,446.98 and 15,901.06 is: 23,819.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990.18 : 28,446.98 = 15,901.06 : x
  2. Step 2: Convert to fraction form
    18,990.18/28,446.98 = 15,901.06/x
  3. Step 3: Cross multiply
    18,990.18x = 28,446.98 × 15,901.06
  4. Step 4: Simplify right side
    18,990.18x = 452,337,135.80
  5. Step 5: Solve for x
    x = 452,337,135.80/18,990.18
  6. Step 6: Final answer
    x = 23,819.53

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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.