Home / 28,134.27-38,824.11-15,386.90

Finding the Fourth Proportional to 28,134.27, 38,824.11 and 15,386.90

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Solution

The fourth proportional to 28,134.27, 38,824.11 and 15,386.90 is: 21,233.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,134.27 : 38,824.11 = 15,386.90 : x
  2. Step 2: Convert to fraction form
    28,134.27/38,824.11 = 15,386.90/x
  3. Step 3: Cross multiply
    28,134.27x = 38,824.11 × 15,386.90
  4. Step 4: Simplify right side
    28,134.27x = 597,382,504.04
  5. Step 5: Solve for x
    x = 597,382,504.04/28,134.27
  6. Step 6: Final answer
    x = 21,233.27

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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.