Home / 28,674.82-39,569.97-15,928.89

Finding the Fourth Proportional to 28,674.82, 39,569.97 and 15,928.89

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Solution

The fourth proportional to 28,674.82, 39,569.97 and 15,928.89 is: 21,981.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,674.82 : 39,569.97 = 15,928.89 : x
  2. Step 2: Convert to fraction form
    28,674.82/39,569.97 = 15,928.89/x
  3. Step 3: Cross multiply
    28,674.82x = 39,569.97 × 15,928.89
  4. Step 4: Simplify right side
    28,674.82x = 630,305,610.78
  5. Step 5: Solve for x
    x = 630,305,610.78/28,674.82
  6. Step 6: Final answer
    x = 21,981.15

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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.