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Finding the Fourth Proportional to 10,591.21, 15,897.21 and 8,847.42

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Solution

The fourth proportional to 10,591.21, 15,897.21 and 8,847.42 is: 13,279.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,591.21 : 15,897.21 = 8,847.42 : x
  2. Step 2: Convert to fraction form
    10,591.21/15,897.21 = 8,847.42/x
  3. Step 3: Cross multiply
    10,591.21x = 15,897.21 × 8,847.42
  4. Step 4: Simplify right side
    10,591.21x = 140,649,293.70
  5. Step 5: Solve for x
    x = 140,649,293.70/10,591.21
  6. Step 6: Final answer
    x = 13,279.81

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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.