Home / 28,972.56-39,982.92-16,398

Finding the Fourth Proportional to 28,972.56, 39,982.92 and 16,398

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Solution

The fourth proportional to 28,972.56, 39,982.92 and 16,398 is: 22,629.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,972.56 : 39,982.92 = 16,398 : x
  2. Step 2: Convert to fraction form
    28,972.56/39,982.92 = 16,398/x
  3. Step 3: Cross multiply
    28,972.56x = 39,982.92 × 16,398
  4. Step 4: Simplify right side
    28,972.56x = 655,639,922.16
  5. Step 5: Solve for x
    x = 655,639,922.16/28,972.56
  6. Step 6: Final answer
    x = 22,629.69

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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.