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Finding the Fourth Proportional to 10,220.60, 15,309.30 and 8,276.60

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Solution

The fourth proportional to 10,220.60, 15,309.30 and 8,276.60 is: 12,397.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,220.60 : 15,309.30 = 8,276.60 : x
  2. Step 2: Convert to fraction form
    10,220.60/15,309.30 = 8,276.60/x
  3. Step 3: Cross multiply
    10,220.60x = 15,309.30 × 8,276.60
  4. Step 4: Simplify right side
    10,220.60x = 126,708,952.38
  5. Step 5: Solve for x
    x = 126,708,952.38/10,220.60
  6. Step 6: Final answer
    x = 12,397.41

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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.