Home / 38,380.98-57,488.15-18,618

Finding the Fourth Proportional to 38,380.98, 57,488.15 and 18,618

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Solution

The fourth proportional to 38,380.98, 57,488.15 and 18,618 is: 27,886.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,380.98 : 57,488.15 = 18,618 : x
  2. Step 2: Convert to fraction form
    38,380.98/57,488.15 = 18,618/x
  3. Step 3: Cross multiply
    38,380.98x = 57,488.15 × 18,618
  4. Step 4: Simplify right side
    38,380.98x = 1,070,314,283.61
  5. Step 5: Solve for x
    x = 1,070,314,283.61/38,380.98
  6. Step 6: Final answer
    x = 27,886.58

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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.