Home / 20,258.79-27,958.53-11,308.04

Finding the Fourth Proportional to 20,258.79, 27,958.53 and 11,308.04

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Solution

The fourth proportional to 20,258.79, 27,958.53 and 11,308.04 is: 15,605.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,258.79 : 27,958.53 = 11,308.04 : x
  2. Step 2: Convert to fraction form
    20,258.79/27,958.53 = 11,308.04/x
  3. Step 3: Cross multiply
    20,258.79x = 27,958.53 × 11,308.04
  4. Step 4: Simplify right side
    20,258.79x = 316,156,175.58
  5. Step 5: Solve for x
    x = 316,156,175.58/20,258.79
  6. Step 6: Final answer
    x = 15,605.88

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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.