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Finding the Fourth Proportional to 25,671.40, 38,419.48 and 21,516.10

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Solution

The fourth proportional to 25,671.40, 38,419.48 and 21,516.10 is: 32,200.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,671.40 : 38,419.48 = 21,516.10 : x
  2. Step 2: Convert to fraction form
    25,671.40/38,419.48 = 21,516.10/x
  3. Step 3: Cross multiply
    25,671.40x = 38,419.48 × 21,516.10
  4. Step 4: Simplify right side
    25,671.40x = 826,637,304.47
  5. Step 5: Solve for x
    x = 826,637,304.47/25,671.40
  6. Step 6: Final answer
    x = 32,200.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.