Home / 21,781.30-32,682.76-8,633.38

Finding the Fourth Proportional to 21,781.30, 32,682.76 and 8,633.38

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Solution

The fourth proportional to 21,781.30, 32,682.76 and 8,633.38 is: 12,954.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,781.30 : 32,682.76 = 8,633.38 : x
  2. Step 2: Convert to fraction form
    21,781.30/32,682.76 = 8,633.38/x
  3. Step 3: Cross multiply
    21,781.30x = 32,682.76 × 8,633.38
  4. Step 4: Simplify right side
    21,781.30x = 282,162,686.53
  5. Step 5: Solve for x
    x = 282,162,686.53/21,781.30
  6. Step 6: Final answer
    x = 12,954.35

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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.