Home / 27,939.12-38,554.98-15,363.78

Finding the Fourth Proportional to 27,939.12, 38,554.98 and 15,363.78

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Solution

The fourth proportional to 27,939.12, 38,554.98 and 15,363.78 is: 21,201.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,939.12 : 38,554.98 = 15,363.78 : x
  2. Step 2: Convert to fraction form
    27,939.12/38,554.98 = 15,363.78/x
  3. Step 3: Cross multiply
    27,939.12x = 38,554.98 × 15,363.78
  4. Step 4: Simplify right side
    27,939.12x = 592,350,230.62
  5. Step 5: Solve for x
    x = 592,350,230.62/27,939.12
  6. Step 6: Final answer
    x = 21,201.46

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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.