Home / 22,551.98-31,120.96-12,480.84

Finding the Fourth Proportional to 22,551.98, 31,120.96 and 12,480.84

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Solution

The fourth proportional to 22,551.98, 31,120.96 and 12,480.84 is: 17,223.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,551.98 : 31,120.96 = 12,480.84 : x
  2. Step 2: Convert to fraction form
    22,551.98/31,120.96 = 12,480.84/x
  3. Step 3: Cross multiply
    22,551.98x = 31,120.96 × 12,480.84
  4. Step 4: Simplify right side
    22,551.98x = 388,415,691.20
  5. Step 5: Solve for x
    x = 388,415,691.20/22,551.98
  6. Step 6: Final answer
    x = 17,223.13

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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.