Home / 20,747.61-28,630.71-12,694.65

Finding the Fourth Proportional to 20,747.61, 28,630.71 and 12,694.65

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Solution

The fourth proportional to 20,747.61, 28,630.71 and 12,694.65 is: 17,518.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747.61 : 28,630.71 = 12,694.65 : x
  2. Step 2: Convert to fraction form
    20,747.61/28,630.71 = 12,694.65/x
  3. Step 3: Cross multiply
    20,747.61x = 28,630.71 × 12,694.65
  4. Step 4: Simplify right side
    20,747.61x = 363,456,842.70
  5. Step 5: Solve for x
    x = 363,456,842.70/20,747.61
  6. Step 6: Final answer
    x = 17,518.01

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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.