Home / 27,681.12-38,196.36-15,741.90

Finding the Fourth Proportional to 27,681.12, 38,196.36 and 15,741.90

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Solution

The fourth proportional to 27,681.12, 38,196.36 and 15,741.90 is: 21,721.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,681.12 : 38,196.36 = 15,741.90 : x
  2. Step 2: Convert to fraction form
    27,681.12/38,196.36 = 15,741.90/x
  3. Step 3: Cross multiply
    27,681.12x = 38,196.36 × 15,741.90
  4. Step 4: Simplify right side
    27,681.12x = 601,283,279.48
  5. Step 5: Solve for x
    x = 601,283,279.48/27,681.12
  6. Step 6: Final answer
    x = 21,721.78

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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.