Home / 28,129.91-38,823.14-16,949.75

Finding the Fourth Proportional to 28,129.91, 38,823.14 and 16,949.75

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Solution

The fourth proportional to 28,129.91, 38,823.14 and 16,949.75 is: 23,392.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,129.91 : 38,823.14 = 16,949.75 : x
  2. Step 2: Convert to fraction form
    28,129.91/38,823.14 = 16,949.75/x
  3. Step 3: Cross multiply
    28,129.91x = 38,823.14 × 16,949.75
  4. Step 4: Simplify right side
    28,129.91x = 658,042,432.47
  5. Step 5: Solve for x
    x = 658,042,432.47/28,129.91
  6. Step 6: Final answer
    x = 23,392.98

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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.