Home / 27,999.75-38,639.66-15,425.31

Finding the Fourth Proportional to 27,999.75, 38,639.66 and 15,425.31

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Solution

The fourth proportional to 27,999.75, 38,639.66 and 15,425.31 is: 21,286.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,999.75 : 38,639.66 = 15,425.31 : x
  2. Step 2: Convert to fraction form
    27,999.75/38,639.66 = 15,425.31/x
  3. Step 3: Cross multiply
    27,999.75x = 38,639.66 × 15,425.31
  4. Step 4: Simplify right side
    27,999.75x = 596,028,656.67
  5. Step 5: Solve for x
    x = 596,028,656.67/27,999.75
  6. Step 6: Final answer
    x = 21,286.93

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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.