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Finding the Fourth Proportional to 26,656, 36,788.52 and 15,478

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Solution

The fourth proportional to 26,656, 36,788.52 and 15,478 is: 21,361.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,656 : 36,788.52 = 15,478 : x
  2. Step 2: Convert to fraction form
    26,656/36,788.52 = 15,478/x
  3. Step 3: Cross multiply
    26,656x = 36,788.52 × 15,478
  4. Step 4: Simplify right side
    26,656x = 569,412,712.56
  5. Step 5: Solve for x
    x = 569,412,712.56/26,656
  6. Step 6: Final answer
    x = 21,361.52

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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.