Home / 21,716.11-32,720.14-19,638.46

Finding the Fourth Proportional to 21,716.11, 32,720.14 and 19,638.46

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Solution

The fourth proportional to 21,716.11, 32,720.14 and 19,638.46 is: 29,589.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,716.11 : 32,720.14 = 19,638.46 : x
  2. Step 2: Convert to fraction form
    21,716.11/32,720.14 = 19,638.46/x
  3. Step 3: Cross multiply
    21,716.11x = 32,720.14 × 19,638.46
  4. Step 4: Simplify right side
    21,716.11x = 642,573,160.58
  5. Step 5: Solve for x
    x = 642,573,160.58/21,716.11
  6. Step 6: Final answer
    x = 29,589.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.