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Finding the Third Proportional to 25,438 and 38,428

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Solution

The third proportional to 25,438 and 38,428 is: 58,051.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,438 : 38,428 = 38,428 : x
  2. Step 2: Convert to fraction form
    25,438/38,428 = 38,428/x
  3. Step 3: Cross multiply
    25,438x = 38,428 × 38,428
  4. Step 4: Simplify right side
    25,438x = 1,476,711,184
  5. Step 5: Solve for x
    x = 1,476,711,184/25,438
  6. Step 6: Final answer
    x = 58,051.39

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.