Home / 27,868.11-38,460.69-15,929.18

Finding the Fourth Proportional to 27,868.11, 38,460.69 and 15,929.18

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Solution

The fourth proportional to 27,868.11, 38,460.69 and 15,929.18 is: 21,983.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,868.11 : 38,460.69 = 15,929.18 : x
  2. Step 2: Convert to fraction form
    27,868.11/38,460.69 = 15,929.18/x
  3. Step 3: Cross multiply
    27,868.11x = 38,460.69 × 15,929.18
  4. Step 4: Simplify right side
    27,868.11x = 612,647,253.93
  5. Step 5: Solve for x
    x = 612,647,253.93/27,868.11
  6. Step 6: Final answer
    x = 21,983.81

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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.