Home / 21,523.98-32,335.17-20,639.34

Finding the Fourth Proportional to 21,523.98, 32,335.17 and 20,639.34

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Solution

The fourth proportional to 21,523.98, 32,335.17 and 20,639.34 is: 31,006.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,523.98 : 32,335.17 = 20,639.34 : x
  2. Step 2: Convert to fraction form
    21,523.98/32,335.17 = 20,639.34/x
  3. Step 3: Cross multiply
    21,523.98x = 32,335.17 × 20,639.34
  4. Step 4: Simplify right side
    21,523.98x = 667,376,567.59
  5. Step 5: Solve for x
    x = 667,376,567.59/21,523.98
  6. Step 6: Final answer
    x = 31,006.19

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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.