Home / 27,705.13-38,233.28-15,129.88

Finding the Fourth Proportional to 27,705.13, 38,233.28 and 15,129.88

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Solution

The fourth proportional to 27,705.13, 38,233.28 and 15,129.88 is: 20,879.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,705.13 : 38,233.28 = 15,129.88 : x
  2. Step 2: Convert to fraction form
    27,705.13/38,233.28 = 15,129.88/x
  3. Step 3: Cross multiply
    27,705.13x = 38,233.28 × 15,129.88
  4. Step 4: Simplify right side
    27,705.13x = 578,464,785.06
  5. Step 5: Solve for x
    x = 578,464,785.06/27,705.13
  6. Step 6: Final answer
    x = 20,879.34

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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.