Home / 18,691.60-28,038.91-5,543.93

Finding the Fourth Proportional to 18,691.60, 28,038.91 and 5,543.93

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Solution

The fourth proportional to 18,691.60, 28,038.91 and 5,543.93 is: 8,316.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.60 : 28,038.91 = 5,543.93 : x
  2. Step 2: Convert to fraction form
    18,691.60/28,038.91 = 5,543.93/x
  3. Step 3: Cross multiply
    18,691.60x = 28,038.91 × 5,543.93
  4. Step 4: Simplify right side
    18,691.60x = 155,445,765.48
  5. Step 5: Solve for x
    x = 155,445,765.48/18,691.60
  6. Step 6: Final answer
    x = 8,316.34

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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.