Home / 27,998.20-38,637.18-15,422.68

Finding the Fourth Proportional to 27,998.20, 38,637.18 and 15,422.68

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Solution

The fourth proportional to 27,998.20, 38,637.18 and 15,422.68 is: 21,283.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,998.20 : 38,637.18 = 15,422.68 : x
  2. Step 2: Convert to fraction form
    27,998.20/38,637.18 = 15,422.68/x
  3. Step 3: Cross multiply
    27,998.20x = 38,637.18 × 15,422.68
  4. Step 4: Simplify right side
    27,998.20x = 595,888,863.24
  5. Step 5: Solve for x
    x = 595,888,863.24/27,998.20
  6. Step 6: Final answer
    x = 21,283.11

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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.