Home / 27,862.72-38,443.89-15,763.44

Finding the Fourth Proportional to 27,862.72, 38,443.89 and 15,763.44

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Solution

The fourth proportional to 27,862.72, 38,443.89 and 15,763.44 is: 21,749.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,862.72 : 38,443.89 = 15,763.44 : x
  2. Step 2: Convert to fraction form
    27,862.72/38,443.89 = 15,763.44/x
  3. Step 3: Cross multiply
    27,862.72x = 38,443.89 × 15,763.44
  4. Step 4: Simplify right side
    27,862.72x = 606,007,953.38
  5. Step 5: Solve for x
    x = 606,007,953.38/27,862.72
  6. Step 6: Final answer
    x = 21,749.78

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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.