Home / 27,683.88-38,219.55-18,279.78

Finding the Fourth Proportional to 27,683.88, 38,219.55 and 18,279.78

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Solution

The fourth proportional to 27,683.88, 38,219.55 and 18,279.78 is: 25,236.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,683.88 : 38,219.55 = 18,279.78 : x
  2. Step 2: Convert to fraction form
    27,683.88/38,219.55 = 18,279.78/x
  3. Step 3: Cross multiply
    27,683.88x = 38,219.55 × 18,279.78
  4. Step 4: Simplify right side
    27,683.88x = 698,644,753.83
  5. Step 5: Solve for x
    x = 698,644,753.83/27,683.88
  6. Step 6: Final answer
    x = 25,236.52

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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.