Home / 19,974.48-27,561.16-12,422.80

Finding the Fourth Proportional to 19,974.48, 27,561.16 and 12,422.80

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Solution

The fourth proportional to 19,974.48, 27,561.16 and 12,422.80 is: 17,141.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,974.48 : 27,561.16 = 12,422.80 : x
  2. Step 2: Convert to fraction form
    19,974.48/27,561.16 = 12,422.80/x
  3. Step 3: Cross multiply
    19,974.48x = 27,561.16 × 12,422.80
  4. Step 4: Simplify right side
    19,974.48x = 342,386,778.45
  5. Step 5: Solve for x
    x = 342,386,778.45/19,974.48
  6. Step 6: Final answer
    x = 17,141.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.