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Finding the Fourth Proportional to 26,376, 36,398.88 and 15,201.60

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Solution

The fourth proportional to 26,376, 36,398.88 and 15,201.60 is: 20,978.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,376 : 36,398.88 = 15,201.60 : x
  2. Step 2: Convert to fraction form
    26,376/36,398.88 = 15,201.60/x
  3. Step 3: Cross multiply
    26,376x = 36,398.88 × 15,201.60
  4. Step 4: Simplify right side
    26,376x = 553,321,214.21
  5. Step 5: Solve for x
    x = 553,321,214.21/26,376
  6. Step 6: Final answer
    x = 20,978.21

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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.