Home / 12,839.23-19,239.90-5,821.39

Finding the Fourth Proportional to 12,839.23, 19,239.90 and 5,821.39

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Solution

The fourth proportional to 12,839.23, 19,239.90 and 5,821.39 is: 8,723.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,839.23 : 19,239.90 = 5,821.39 : x
  2. Step 2: Convert to fraction form
    12,839.23/19,239.90 = 5,821.39/x
  3. Step 3: Cross multiply
    12,839.23x = 19,239.90 × 5,821.39
  4. Step 4: Simplify right side
    12,839.23x = 112,002,961.46
  5. Step 5: Solve for x
    x = 112,002,961.46/12,839.23
  6. Step 6: Final answer
    x = 8,723.50

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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.