Home / 26,639.94-39,949.52-9,990.90

Finding the Fourth Proportional to 26,639.94, 39,949.52 and 9,990.90

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Solution

The fourth proportional to 26,639.94, 39,949.52 and 9,990.90 is: 14,982.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,639.94 : 39,949.52 = 9,990.90 : x
  2. Step 2: Convert to fraction form
    26,639.94/39,949.52 = 9,990.90/x
  3. Step 3: Cross multiply
    26,639.94x = 39,949.52 × 9,990.90
  4. Step 4: Simplify right side
    26,639.94x = 399,131,659.37
  5. Step 5: Solve for x
    x = 399,131,659.37/26,639.94
  6. Step 6: Final answer
    x = 14,982.45

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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.