Home / 21,656.40-32,491.20-9,169.92

Finding the Fourth Proportional to 21,656.40, 32,491.20 and 9,169.92

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Solution

The fourth proportional to 21,656.40, 32,491.20 and 9,169.92 is: 13,757.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,656.40 : 32,491.20 = 9,169.92 : x
  2. Step 2: Convert to fraction form
    21,656.40/32,491.20 = 9,169.92/x
  3. Step 3: Cross multiply
    21,656.40x = 32,491.20 × 9,169.92
  4. Step 4: Simplify right side
    21,656.40x = 297,941,704.70
  5. Step 5: Solve for x
    x = 297,941,704.70/21,656.40
  6. Step 6: Final answer
    x = 13,757.67

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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.