Home / 21,419.18-32,128.76-5,836.80

Finding the Fourth Proportional to 21,419.18, 32,128.76 and 5,836.80

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Solution

The fourth proportional to 21,419.18, 32,128.76 and 5,836.80 is: 8,755.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,419.18 : 32,128.76 = 5,836.80 : x
  2. Step 2: Convert to fraction form
    21,419.18/32,128.76 = 5,836.80/x
  3. Step 3: Cross multiply
    21,419.18x = 32,128.76 × 5,836.80
  4. Step 4: Simplify right side
    21,419.18x = 187,529,117.18
  5. Step 5: Solve for x
    x = 187,529,117.18/21,419.18
  6. Step 6: Final answer
    x = 8,755.20

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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.