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Finding the Fourth Proportional to 25,654.70, 35,408.09 and 15,307.11

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Solution

The fourth proportional to 25,654.70, 35,408.09 and 15,307.11 is: 21,126.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,654.70 : 35,408.09 = 15,307.11 : x
  2. Step 2: Convert to fraction form
    25,654.70/35,408.09 = 15,307.11/x
  3. Step 3: Cross multiply
    25,654.70x = 35,408.09 × 15,307.11
  4. Step 4: Simplify right side
    25,654.70x = 541,995,480.69
  5. Step 5: Solve for x
    x = 541,995,480.69/25,654.70
  6. Step 6: Final answer
    x = 21,126.56

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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.