Home / 20,707.08-28,576.17-11,275.65

Finding the Fourth Proportional to 20,707.08, 28,576.17 and 11,275.65

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Solution

The fourth proportional to 20,707.08, 28,576.17 and 11,275.65 is: 15,560.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.08 : 28,576.17 = 11,275.65 : x
  2. Step 2: Convert to fraction form
    20,707.08/28,576.17 = 11,275.65/x
  3. Step 3: Cross multiply
    20,707.08x = 28,576.17 × 11,275.65
  4. Step 4: Simplify right side
    20,707.08x = 322,214,891.26
  5. Step 5: Solve for x
    x = 322,214,891.26/20,707.08
  6. Step 6: Final answer
    x = 15,560.61

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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.