Home / 27,657.32-38,170.38-15,722.45

Finding the Fourth Proportional to 27,657.32, 38,170.38 and 15,722.45

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Solution

The fourth proportional to 27,657.32, 38,170.38 and 15,722.45 is: 21,698.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,657.32 : 38,170.38 = 15,722.45 : x
  2. Step 2: Convert to fraction form
    27,657.32/38,170.38 = 15,722.45/x
  3. Step 3: Cross multiply
    27,657.32x = 38,170.38 × 15,722.45
  4. Step 4: Simplify right side
    27,657.32x = 600,131,891.03
  5. Step 5: Solve for x
    x = 600,131,891.03/27,657.32
  6. Step 6: Final answer
    x = 21,698.84

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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.