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Finding the Fourth Proportional to 14,956.58, 20,640.98 and 8,242.20

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Solution

The fourth proportional to 14,956.58, 20,640.98 and 8,242.20 is: 11,374.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,956.58 : 20,640.98 = 8,242.20 : x
  2. Step 2: Convert to fraction form
    14,956.58/20,640.98 = 8,242.20/x
  3. Step 3: Cross multiply
    14,956.58x = 20,640.98 × 8,242.20
  4. Step 4: Simplify right side
    14,956.58x = 170,127,044.15
  5. Step 5: Solve for x
    x = 170,127,044.15/14,956.58
  6. Step 6: Final answer
    x = 11,374.73

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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.