Home / 27,659.72-38,170.06-15,722.28

Finding the Fourth Proportional to 27,659.72, 38,170.06 and 15,722.28

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Solution

The fourth proportional to 27,659.72, 38,170.06 and 15,722.28 is: 21,696.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,659.72 : 38,170.06 = 15,722.28 : x
  2. Step 2: Convert to fraction form
    27,659.72/38,170.06 = 15,722.28/x
  3. Step 3: Cross multiply
    27,659.72x = 38,170.06 × 15,722.28
  4. Step 4: Simplify right side
    27,659.72x = 600,120,370.94
  5. Step 5: Solve for x
    x = 600,120,370.94/27,659.72
  6. Step 6: Final answer
    x = 21,696.55

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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.