Home / 21,515.38-32,276.82-6,720.52

Finding the Fourth Proportional to 21,515.38, 32,276.82 and 6,720.52

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Solution

The fourth proportional to 21,515.38, 32,276.82 and 6,720.52 is: 10,081.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,515.38 : 32,276.82 = 6,720.52 : x
  2. Step 2: Convert to fraction form
    21,515.38/32,276.82 = 6,720.52/x
  3. Step 3: Cross multiply
    21,515.38x = 32,276.82 × 6,720.52
  4. Step 4: Simplify right side
    21,515.38x = 216,917,014.35
  5. Step 5: Solve for x
    x = 216,917,014.35/21,515.38
  6. Step 6: Final answer
    x = 10,081.95

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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.