Home / 22,761.97-31,400.35-15,210.15

Finding the Fourth Proportional to 22,761.97, 31,400.35 and 15,210.15

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Solution

The fourth proportional to 22,761.97, 31,400.35 and 15,210.15 is: 20,982.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,761.97 : 31,400.35 = 15,210.15 : x
  2. Step 2: Convert to fraction form
    22,761.97/31,400.35 = 15,210.15/x
  3. Step 3: Cross multiply
    22,761.97x = 31,400.35 × 15,210.15
  4. Step 4: Simplify right side
    22,761.97x = 477,604,185.49
  5. Step 5: Solve for x
    x = 477,604,185.49/22,761.97
  6. Step 6: Final answer
    x = 20,982.55

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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.