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Finding the Fourth Proportional to 26,390.61, 36,418.61 and 15,063.62

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Solution

The fourth proportional to 26,390.61, 36,418.61 and 15,063.62 is: 20,787.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,390.61 : 36,418.61 = 15,063.62 : x
  2. Step 2: Convert to fraction form
    26,390.61/36,418.61 = 15,063.62/x
  3. Step 3: Cross multiply
    26,390.61x = 36,418.61 × 15,063.62
  4. Step 4: Simplify right side
    26,390.61x = 548,596,162.39
  5. Step 5: Solve for x
    x = 548,596,162.39/26,390.61
  6. Step 6: Final answer
    x = 20,787.55

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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.