Home / 21,144.84-31,704.95-7,998.23

Finding the Fourth Proportional to 21,144.84, 31,704.95 and 7,998.23

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Solution

The fourth proportional to 21,144.84, 31,704.95 and 7,998.23 is: 11,992.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144.84 : 31,704.95 = 7,998.23 : x
  2. Step 2: Convert to fraction form
    21,144.84/31,704.95 = 7,998.23/x
  3. Step 3: Cross multiply
    21,144.84x = 31,704.95 × 7,998.23
  4. Step 4: Simplify right side
    21,144.84x = 253,583,591.49
  5. Step 5: Solve for x
    x = 253,583,591.49/21,144.84
  6. Step 6: Final answer
    x = 11,992.70

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Double scale
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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.