Home / 27,807.12-38,372.40-15,229.44

Finding the Fourth Proportional to 27,807.12, 38,372.40 and 15,229.44

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Solution

The fourth proportional to 27,807.12, 38,372.40 and 15,229.44 is: 21,015.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,807.12 : 38,372.40 = 15,229.44 : x
  2. Step 2: Convert to fraction form
    27,807.12/38,372.40 = 15,229.44/x
  3. Step 3: Cross multiply
    27,807.12x = 38,372.40 × 15,229.44
  4. Step 4: Simplify right side
    27,807.12x = 584,390,163.46
  5. Step 5: Solve for x
    x = 584,390,163.46/27,807.12
  6. Step 6: Final answer
    x = 21,015.85

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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.