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Finding the Fourth Proportional to 25,408, 35,063.04 and 15,472

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Solution

The fourth proportional to 25,408, 35,063.04 and 15,472 is: 21,351.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,408 : 35,063.04 = 15,472 : x
  2. Step 2: Convert to fraction form
    25,408/35,063.04 = 15,472/x
  3. Step 3: Cross multiply
    25,408x = 35,063.04 × 15,472
  4. Step 4: Simplify right side
    25,408x = 542,495,354.88
  5. Step 5: Solve for x
    x = 542,495,354.88/25,408
  6. Step 6: Final answer
    x = 21,351.36

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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.