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Finding the Fourth Proportional to 20,375.64, 30,564.04 and 9,276.60

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Solution

The fourth proportional to 20,375.64, 30,564.04 and 9,276.60 is: 13,915.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.64 : 30,564.04 = 9,276.60 : x
  2. Step 2: Convert to fraction form
    20,375.64/30,564.04 = 9,276.60/x
  3. Step 3: Cross multiply
    20,375.64x = 30,564.04 × 9,276.60
  4. Step 4: Simplify right side
    20,375.64x = 283,530,373.46
  5. Step 5: Solve for x
    x = 283,530,373.46/20,375.64
  6. Step 6: Final answer
    x = 13,915.16

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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.