Home / 27,669.56-38,195.44-20,955.20

Finding the Fourth Proportional to 27,669.56, 38,195.44 and 20,955.20

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Solution

The fourth proportional to 27,669.56, 38,195.44 and 20,955.20 is: 28,926.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,669.56 : 38,195.44 = 20,955.20 : x
  2. Step 2: Convert to fraction form
    27,669.56/38,195.44 = 20,955.20/x
  3. Step 3: Cross multiply
    27,669.56x = 38,195.44 × 20,955.20
  4. Step 4: Simplify right side
    27,669.56x = 800,393,084.29
  5. Step 5: Solve for x
    x = 800,393,084.29/27,669.56
  6. Step 6: Final answer
    x = 28,926.85

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Half scale
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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.