Home / 38,412.78-57,619.14-12,119.58

Finding the Fourth Proportional to 38,412.78, 57,619.14 and 12,119.58

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Solution

The fourth proportional to 38,412.78, 57,619.14 and 12,119.58 is: 18,179.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,412.78 : 57,619.14 = 12,119.58 : x
  2. Step 2: Convert to fraction form
    38,412.78/57,619.14 = 12,119.58/x
  3. Step 3: Cross multiply
    38,412.78x = 57,619.14 × 12,119.58
  4. Step 4: Simplify right side
    38,412.78x = 698,319,776.76
  5. Step 5: Solve for x
    x = 698,319,776.76/38,412.78
  6. Step 6: Final answer
    x = 18,179.36

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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.