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Finding the Fourth Proportional to 26,651.20, 39,949.26 and 9,999.49

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Solution

The fourth proportional to 26,651.20, 39,949.26 and 9,999.49 is: 14,988.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,651.20 : 39,949.26 = 9,999.49 : x
  2. Step 2: Convert to fraction form
    26,651.20/39,949.26 = 9,999.49/x
  3. Step 3: Cross multiply
    26,651.20x = 39,949.26 × 9,999.49
  4. Step 4: Simplify right side
    26,651.20x = 399,472,225.88
  5. Step 5: Solve for x
    x = 399,472,225.88/26,651.20
  6. Step 6: Final answer
    x = 14,988.90

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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.