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Finding the Fourth Proportional to 14,956.56, 20,635.24 and 8,990.48

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Solution

The fourth proportional to 14,956.56, 20,635.24 and 8,990.48 is: 12,403.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,956.56 : 20,635.24 = 8,990.48 : x
  2. Step 2: Convert to fraction form
    14,956.56/20,635.24 = 8,990.48/x
  3. Step 3: Cross multiply
    14,956.56x = 20,635.24 × 8,990.48
  4. Step 4: Simplify right side
    14,956.56x = 185,520,712.52
  5. Step 5: Solve for x
    x = 185,520,712.52/14,956.56
  6. Step 6: Final answer
    x = 12,403.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.