Home / 12,908.74-19,363.26-12,279.22

Finding the Fourth Proportional to 12,908.74, 19,363.26 and 12,279.22

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Solution

The fourth proportional to 12,908.74, 19,363.26 and 12,279.22 is: 18,418.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,908.74 : 19,363.26 = 12,279.22 : x
  2. Step 2: Convert to fraction form
    12,908.74/19,363.26 = 12,279.22/x
  3. Step 3: Cross multiply
    12,908.74x = 19,363.26 × 12,279.22
  4. Step 4: Simplify right side
    12,908.74x = 237,765,729.46
  5. Step 5: Solve for x
    x = 237,765,729.46/12,908.74
  6. Step 6: Final answer
    x = 18,418.97

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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.