Home / 12,839.80-19,259.70-10,247.80

Finding the Fourth Proportional to 12,839.80, 19,259.70 and 10,247.80

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Solution

The fourth proportional to 12,839.80, 19,259.70 and 10,247.80 is: 15,371.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,839.80 : 19,259.70 = 10,247.80 : x
  2. Step 2: Convert to fraction form
    12,839.80/19,259.70 = 10,247.80/x
  3. Step 3: Cross multiply
    12,839.80x = 19,259.70 × 10,247.80
  4. Step 4: Simplify right side
    12,839.80x = 197,369,553.66
  5. Step 5: Solve for x
    x = 197,369,553.66/12,839.80
  6. Step 6: Final answer
    x = 15,371.70

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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.