Home / 28,972.80-39,982.24-16,397.12

Finding the Fourth Proportional to 28,972.80, 39,982.24 and 16,397.12

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Solution

The fourth proportional to 28,972.80, 39,982.24 and 16,397.12 is: 22,627.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,972.80 : 39,982.24 = 16,397.12 : x
  2. Step 2: Convert to fraction form
    28,972.80/39,982.24 = 16,397.12/x
  3. Step 3: Cross multiply
    28,972.80x = 39,982.24 × 16,397.12
  4. Step 4: Simplify right side
    28,972.80x = 655,593,587.15
  5. Step 5: Solve for x
    x = 655,593,587.15/28,972.80
  6. Step 6: Final answer
    x = 22,627.90

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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.