Home / 21,443.60-32,170.50-8,956.70

Finding the Fourth Proportional to 21,443.60, 32,170.50 and 8,956.70

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Solution

The fourth proportional to 21,443.60, 32,170.50 and 8,956.70 is: 13,437.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,443.60 : 32,170.50 = 8,956.70 : x
  2. Step 2: Convert to fraction form
    21,443.60/32,170.50 = 8,956.70/x
  3. Step 3: Cross multiply
    21,443.60x = 32,170.50 × 8,956.70
  4. Step 4: Simplify right side
    21,443.60x = 288,141,517.35
  5. Step 5: Solve for x
    x = 288,141,517.35/21,443.60
  6. Step 6: Final answer
    x = 13,437.18

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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.