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Finding the Fourth Proportional to 15,778.60, 23,658.90 and 5,918.20

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Solution

The fourth proportional to 15,778.60, 23,658.90 and 5,918.20 is: 8,873.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,778.60 : 23,658.90 = 5,918.20 : x
  2. Step 2: Convert to fraction form
    15,778.60/23,658.90 = 5,918.20/x
  3. Step 3: Cross multiply
    15,778.60x = 23,658.90 × 5,918.20
  4. Step 4: Simplify right side
    15,778.60x = 140,018,101.98
  5. Step 5: Solve for x
    x = 140,018,101.98/15,778.60
  6. Step 6: Final answer
    x = 8,873.92

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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.