Home / 27,715.28-38,247.20-15,140

Finding the Fourth Proportional to 27,715.28, 38,247.20 and 15,140

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Solution

The fourth proportional to 27,715.28, 38,247.20 and 15,140 is: 20,893.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,715.28 : 38,247.20 = 15,140 : x
  2. Step 2: Convert to fraction form
    27,715.28/38,247.20 = 15,140/x
  3. Step 3: Cross multiply
    27,715.28x = 38,247.20 × 15,140
  4. Step 4: Simplify right side
    27,715.28x = 579,062,608
  5. Step 5: Solve for x
    x = 579,062,608/27,715.28
  6. Step 6: Final answer
    x = 20,893.26

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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.