Home / 19,873.85-27,427.28-13,147.81

Finding the Fourth Proportional to 19,873.85, 27,427.28 and 13,147.81

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Solution

The fourth proportional to 19,873.85, 27,427.28 and 13,147.81 is: 18,144.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,873.85 : 27,427.28 = 13,147.81 : x
  2. Step 2: Convert to fraction form
    19,873.85/27,427.28 = 13,147.81/x
  3. Step 3: Cross multiply
    19,873.85x = 27,427.28 × 13,147.81
  4. Step 4: Simplify right side
    19,873.85x = 360,608,531.95
  5. Step 5: Solve for x
    x = 360,608,531.95/19,873.85
  6. Step 6: Final answer
    x = 18,144.88

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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.