Home / 20,695.65-28,560.05-11,743.13

Finding the Fourth Proportional to 20,695.65, 28,560.05 and 11,743.13

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Solution

The fourth proportional to 20,695.65, 28,560.05 and 11,743.13 is: 16,205.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.65 : 28,560.05 = 11,743.13 : x
  2. Step 2: Convert to fraction form
    20,695.65/28,560.05 = 11,743.13/x
  3. Step 3: Cross multiply
    20,695.65x = 28,560.05 × 11,743.13
  4. Step 4: Simplify right side
    20,695.65x = 335,384,276.03
  5. Step 5: Solve for x
    x = 335,384,276.03/20,695.65
  6. Step 6: Final answer
    x = 16,205.55

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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.