Home / 27,878.25-38,472.03-15,941.85

Finding the Fourth Proportional to 27,878.25, 38,472.03 and 15,941.85

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Solution

The fourth proportional to 27,878.25, 38,472.03 and 15,941.85 is: 21,999.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,878.25 : 38,472.03 = 15,941.85 : x
  2. Step 2: Convert to fraction form
    27,878.25/38,472.03 = 15,941.85/x
  3. Step 3: Cross multiply
    27,878.25x = 38,472.03 × 15,941.85
  4. Step 4: Simplify right side
    27,878.25x = 613,315,331.46
  5. Step 5: Solve for x
    x = 613,315,331.46/27,878.25
  6. Step 6: Final answer
    x = 21,999.78

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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.