Home / 13,630.56-20,432.16-8,705.76

Finding the Fourth Proportional to 13,630.56, 20,432.16 and 8,705.76

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Solution

The fourth proportional to 13,630.56, 20,432.16 and 8,705.76 is: 13,049.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,630.56 : 20,432.16 = 8,705.76 : x
  2. Step 2: Convert to fraction form
    13,630.56/20,432.16 = 8,705.76/x
  3. Step 3: Cross multiply
    13,630.56x = 20,432.16 × 8,705.76
  4. Step 4: Simplify right side
    13,630.56x = 177,877,481.24
  5. Step 5: Solve for x
    x = 177,877,481.24/13,630.56
  6. Step 6: Final answer
    x = 13,049.90

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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.