Home / 18,729.20-28,097.45-5,581.28

Finding the Fourth Proportional to 18,729.20, 28,097.45 and 5,581.28

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Solution

The fourth proportional to 18,729.20, 28,097.45 and 5,581.28 is: 8,373.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.20 : 28,097.45 = 5,581.28 : x
  2. Step 2: Convert to fraction form
    18,729.20/28,097.45 = 5,581.28/x
  3. Step 3: Cross multiply
    18,729.20x = 28,097.45 × 5,581.28
  4. Step 4: Simplify right side
    18,729.20x = 156,819,735.74
  5. Step 5: Solve for x
    x = 156,819,735.74/18,729.20
  6. Step 6: Final answer
    x = 8,373.01

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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.