Home / 27,629.80-38,131.86-15,693.88

Finding the Fourth Proportional to 27,629.80, 38,131.86 and 15,693.88

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Solution

The fourth proportional to 27,629.80, 38,131.86 and 15,693.88 is: 21,659.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,629.80 : 38,131.86 = 15,693.88 : x
  2. Step 2: Convert to fraction form
    27,629.80/38,131.86 = 15,693.88/x
  3. Step 3: Cross multiply
    27,629.80x = 38,131.86 × 15,693.88
  4. Step 4: Simplify right side
    27,629.80x = 598,436,835.02
  5. Step 5: Solve for x
    x = 598,436,835.02/27,629.80
  6. Step 6: Final answer
    x = 21,659.11

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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.