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Finding the Fourth Proportional to 26,651.60, 36,781 and 15,324.84

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Solution

The fourth proportional to 26,651.60, 36,781 and 15,324.84 is: 21,149.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,651.60 : 36,781 = 15,324.84 : x
  2. Step 2: Convert to fraction form
    26,651.60/36,781 = 15,324.84/x
  3. Step 3: Cross multiply
    26,651.60x = 36,781 × 15,324.84
  4. Step 4: Simplify right side
    26,651.60x = 563,662,940.04
  5. Step 5: Solve for x
    x = 563,662,940.04/26,651.60
  6. Step 6: Final answer
    x = 21,149.31

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1.5x scale

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.