Home / 21,868.49-30,146.25-15,475.22

Finding the Fourth Proportional to 21,868.49, 30,146.25 and 15,475.22

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Solution

The fourth proportional to 21,868.49, 30,146.25 and 15,475.22 is: 21,332.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,868.49 : 30,146.25 = 15,475.22 : x
  2. Step 2: Convert to fraction form
    21,868.49/30,146.25 = 15,475.22/x
  3. Step 3: Cross multiply
    21,868.49x = 30,146.25 × 15,475.22
  4. Step 4: Simplify right side
    21,868.49x = 466,519,850.93
  5. Step 5: Solve for x
    x = 466,519,850.93/21,868.49
  6. Step 6: Final answer
    x = 21,332.97

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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.