Home / 18,691.18-28,042.18-5,543.87

Finding the Fourth Proportional to 18,691.18, 28,042.18 and 5,543.87

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Solution

The fourth proportional to 18,691.18, 28,042.18 and 5,543.87 is: 8,317.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.18 : 28,042.18 = 5,543.87 : x
  2. Step 2: Convert to fraction form
    18,691.18/28,042.18 = 5,543.87/x
  3. Step 3: Cross multiply
    18,691.18x = 28,042.18 × 5,543.87
  4. Step 4: Simplify right side
    18,691.18x = 155,462,060.23
  5. Step 5: Solve for x
    x = 155,462,060.23/18,691.18
  6. Step 6: Final answer
    x = 8,317.40

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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.