Home / 21,819.71-32,732.12-7,781.73

Finding the Fourth Proportional to 21,819.71, 32,732.12 and 7,781.73

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Solution

The fourth proportional to 21,819.71, 32,732.12 and 7,781.73 is: 11,673.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,819.71 : 32,732.12 = 7,781.73 : x
  2. Step 2: Convert to fraction form
    21,819.71/32,732.12 = 7,781.73/x
  3. Step 3: Cross multiply
    21,819.71x = 32,732.12 × 7,781.73
  4. Step 4: Simplify right side
    21,819.71x = 254,712,520.17
  5. Step 5: Solve for x
    x = 254,712,520.17/21,819.71
  6. Step 6: Final answer
    x = 11,673.51

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1.5x scale

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.