Home / 18,729.45-28,097.82-5,581.53

Finding the Fourth Proportional to 18,729.45, 28,097.82 and 5,581.53

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Solution

The fourth proportional to 18,729.45, 28,097.82 and 5,581.53 is: 8,373.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.45 : 28,097.82 = 5,581.53 : x
  2. Step 2: Convert to fraction form
    18,729.45/28,097.82 = 5,581.53/x
  3. Step 3: Cross multiply
    18,729.45x = 28,097.82 × 5,581.53
  4. Step 4: Simplify right side
    18,729.45x = 156,828,825.26
  5. Step 5: Solve for x
    x = 156,828,825.26/18,729.45
  6. Step 6: Final answer
    x = 8,373.38

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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.