Home / 19,930.12-27,514.12-15,443.80

Finding the Fourth Proportional to 19,930.12, 27,514.12 and 15,443.80

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Solution

The fourth proportional to 19,930.12, 27,514.12 and 15,443.80 is: 21,320.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,930.12 : 27,514.12 = 15,443.80 : x
  2. Step 2: Convert to fraction form
    19,930.12/27,514.12 = 15,443.80/x
  3. Step 3: Cross multiply
    19,930.12x = 27,514.12 × 15,443.80
  4. Step 4: Simplify right side
    19,930.12x = 424,922,566.46
  5. Step 5: Solve for x
    x = 424,922,566.46/19,930.12
  6. Step 6: Final answer
    x = 21,320.62

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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.