Home / 28,204.28-38,921.94-15,629

Finding the Fourth Proportional to 28,204.28, 38,921.94 and 15,629

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Solution

The fourth proportional to 28,204.28, 38,921.94 and 15,629 is: 21,568.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,204.28 : 38,921.94 = 15,629 : x
  2. Step 2: Convert to fraction form
    28,204.28/38,921.94 = 15,629/x
  3. Step 3: Cross multiply
    28,204.28x = 38,921.94 × 15,629
  4. Step 4: Simplify right side
    28,204.28x = 608,311,000.26
  5. Step 5: Solve for x
    x = 608,311,000.26/28,204.28
  6. Step 6: Final answer
    x = 21,568.04

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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.