Home / 22,557.80-31,115.24-15,488.12

Finding the Fourth Proportional to 22,557.80, 31,115.24 and 15,488.12

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Solution

The fourth proportional to 22,557.80, 31,115.24 and 15,488.12 is: 21,363.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,557.80 : 31,115.24 = 15,488.12 : x
  2. Step 2: Convert to fraction form
    22,557.80/31,115.24 = 15,488.12/x
  3. Step 3: Cross multiply
    22,557.80x = 31,115.24 × 15,488.12
  4. Step 4: Simplify right side
    22,557.80x = 481,916,570.95
  5. Step 5: Solve for x
    x = 481,916,570.95/22,557.80
  6. Step 6: Final answer
    x = 21,363.63

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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.