Home / 38,243.06-57,281.40-18,480

Finding the Fourth Proportional to 38,243.06, 57,281.40 and 18,480

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Solution

The fourth proportional to 38,243.06, 57,281.40 and 18,480 is: 27,679.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,243.06 : 57,281.40 = 18,480 : x
  2. Step 2: Convert to fraction form
    38,243.06/57,281.40 = 18,480/x
  3. Step 3: Cross multiply
    38,243.06x = 57,281.40 × 18,480
  4. Step 4: Simplify right side
    38,243.06x = 1,058,560,272
  5. Step 5: Solve for x
    x = 1,058,560,272/38,243.06
  6. Step 6: Final answer
    x = 27,679.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.