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Finding the Fourth Proportional to 15,321.76, 22,979.60 and 4,225.60

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Solution

The fourth proportional to 15,321.76, 22,979.60 and 4,225.60 is: 6,337.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,321.76 : 22,979.60 = 4,225.60 : x
  2. Step 2: Convert to fraction form
    15,321.76/22,979.60 = 4,225.60/x
  3. Step 3: Cross multiply
    15,321.76x = 22,979.60 × 4,225.60
  4. Step 4: Simplify right side
    15,321.76x = 97,102,597.76
  5. Step 5: Solve for x
    x = 97,102,597.76/15,321.76
  6. Step 6: Final answer
    x = 6,337.56

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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.