Home / 27,708.20-38,236.80-15,608.72

Finding the Fourth Proportional to 27,708.20, 38,236.80 and 15,608.72

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Solution

The fourth proportional to 27,708.20, 38,236.80 and 15,608.72 is: 21,539.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,708.20 : 38,236.80 = 15,608.72 : x
  2. Step 2: Convert to fraction form
    27,708.20/38,236.80 = 15,608.72/x
  3. Step 3: Cross multiply
    27,708.20x = 38,236.80 × 15,608.72
  4. Step 4: Simplify right side
    27,708.20x = 596,827,504.90
  5. Step 5: Solve for x
    x = 596,827,504.90/27,708.20
  6. Step 6: Final answer
    x = 21,539.74

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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.