Home / 22,145.38-30,562.44-12,715.78

Finding the Fourth Proportional to 22,145.38, 30,562.44 and 12,715.78

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Solution

The fourth proportional to 22,145.38, 30,562.44 and 12,715.78 is: 17,548.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,145.38 : 30,562.44 = 12,715.78 : x
  2. Step 2: Convert to fraction form
    22,145.38/30,562.44 = 12,715.78/x
  3. Step 3: Cross multiply
    22,145.38x = 30,562.44 × 12,715.78
  4. Step 4: Simplify right side
    22,145.38x = 388,625,263.30
  5. Step 5: Solve for x
    x = 388,625,263.30/22,145.38
  6. Step 6: Final answer
    x = 17,548.82

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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.