Home / 28,099.85-42,149.78-15,613.91

Finding the Fourth Proportional to 28,099.85, 42,149.78 and 15,613.91

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Solution

The fourth proportional to 28,099.85, 42,149.78 and 15,613.91 is: 23,420.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,099.85 : 42,149.78 = 15,613.91 : x
  2. Step 2: Convert to fraction form
    28,099.85/42,149.78 = 15,613.91/x
  3. Step 3: Cross multiply
    28,099.85x = 42,149.78 × 15,613.91
  4. Step 4: Simplify right side
    28,099.85x = 658,122,871.44
  5. Step 5: Solve for x
    x = 658,122,871.44/28,099.85
  6. Step 6: Final answer
    x = 23,420.87

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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.