Home / 28,283.31-39,031.20-17,679.20

Finding the Fourth Proportional to 28,283.31, 39,031.20 and 17,679.20

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Solution

The fourth proportional to 28,283.31, 39,031.20 and 17,679.20 is: 24,397.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,283.31 : 39,031.20 = 17,679.20 : x
  2. Step 2: Convert to fraction form
    28,283.31/39,031.20 = 17,679.20/x
  3. Step 3: Cross multiply
    28,283.31x = 39,031.20 × 17,679.20
  4. Step 4: Simplify right side
    28,283.31x = 690,040,195.88
  5. Step 5: Solve for x
    x = 690,040,195.88/28,283.31
  6. Step 6: Final answer
    x = 24,397.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.