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Finding the Fourth Proportional to 10,635.60, 15,924.60 and 8,331.60

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Solution

The fourth proportional to 10,635.60, 15,924.60 and 8,331.60 is: 12,474.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,635.60 : 15,924.60 = 8,331.60 : x
  2. Step 2: Convert to fraction form
    10,635.60/15,924.60 = 8,331.60/x
  3. Step 3: Cross multiply
    10,635.60x = 15,924.60 × 8,331.60
  4. Step 4: Simplify right side
    10,635.60x = 132,677,397.36
  5. Step 5: Solve for x
    x = 132,677,397.36/10,635.60
  6. Step 6: Final answer
    x = 12,474.84

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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.