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Finding the Fourth Proportional to 25,876.78, 35,691.36 and 15,258.89

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Solution

The fourth proportional to 25,876.78, 35,691.36 and 15,258.89 is: 21,046.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,876.78 : 35,691.36 = 15,258.89 : x
  2. Step 2: Convert to fraction form
    25,876.78/35,691.36 = 15,258.89/x
  3. Step 3: Cross multiply
    25,876.78x = 35,691.36 × 15,258.89
  4. Step 4: Simplify right side
    25,876.78x = 544,610,536.19
  5. Step 5: Solve for x
    x = 544,610,536.19/25,876.78
  6. Step 6: Final answer
    x = 21,046.30

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1.5x scale

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.