Home / 21,839.94-32,756.76-9,990.18

Finding the Fourth Proportional to 21,839.94, 32,756.76 and 9,990.18

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Solution

The fourth proportional to 21,839.94, 32,756.76 and 9,990.18 is: 14,983.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,839.94 : 32,756.76 = 9,990.18 : x
  2. Step 2: Convert to fraction form
    21,839.94/32,756.76 = 9,990.18/x
  3. Step 3: Cross multiply
    21,839.94x = 32,756.76 × 9,990.18
  4. Step 4: Simplify right side
    21,839.94x = 327,245,928.62
  5. Step 5: Solve for x
    x = 327,245,928.62/21,839.94
  6. Step 6: Final answer
    x = 14,983.83

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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.