Home / 28,067.72-38,730.69-15,491.66

Finding the Fourth Proportional to 28,067.72, 38,730.69 and 15,491.66

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Solution

The fourth proportional to 28,067.72, 38,730.69 and 15,491.66 is: 21,376.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,067.72 : 38,730.69 = 15,491.66 : x
  2. Step 2: Convert to fraction form
    28,067.72/38,730.69 = 15,491.66/x
  3. Step 3: Cross multiply
    28,067.72x = 38,730.69 × 15,491.66
  4. Step 4: Simplify right side
    28,067.72x = 600,002,487.39
  5. Step 5: Solve for x
    x = 600,002,487.39/28,067.72
  6. Step 6: Final answer
    x = 21,376.96

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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.