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Finding the Fourth Proportional to 26,642.25, 39,974.72 and 9,999.86

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Solution

The fourth proportional to 26,642.25, 39,974.72 and 9,999.86 is: 15,004.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,642.25 : 39,974.72 = 9,999.86 : x
  2. Step 2: Convert to fraction form
    26,642.25/39,974.72 = 9,999.86/x
  3. Step 3: Cross multiply
    26,642.25x = 39,974.72 × 9,999.86
  4. Step 4: Simplify right side
    26,642.25x = 399,741,353.67
  5. Step 5: Solve for x
    x = 399,741,353.67/26,642.25
  6. Step 6: Final answer
    x = 15,004.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.