Home / 21,429.68-32,149.65-8,942.76

Finding the Fourth Proportional to 21,429.68, 32,149.65 and 8,942.76

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Solution

The fourth proportional to 21,429.68, 32,149.65 and 8,942.76 is: 13,416.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,429.68 : 32,149.65 = 8,942.76 : x
  2. Step 2: Convert to fraction form
    21,429.68/32,149.65 = 8,942.76/x
  3. Step 3: Cross multiply
    21,429.68x = 32,149.65 × 8,942.76
  4. Step 4: Simplify right side
    21,429.68x = 287,506,398.57
  5. Step 5: Solve for x
    x = 287,506,398.57/21,429.68
  6. Step 6: Final answer
    x = 13,416.27

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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.