Home / 20,976.63-28,948.20-11,545.19

Finding the Fourth Proportional to 20,976.63, 28,948.20 and 11,545.19

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Solution

The fourth proportional to 20,976.63, 28,948.20 and 11,545.19 is: 15,932.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976.63 : 28,948.20 = 11,545.19 : x
  2. Step 2: Convert to fraction form
    20,976.63/28,948.20 = 11,545.19/x
  3. Step 3: Cross multiply
    20,976.63x = 28,948.20 × 11,545.19
  4. Step 4: Simplify right side
    20,976.63x = 334,212,469.16
  5. Step 5: Solve for x
    x = 334,212,469.16/20,976.63
  6. Step 6: Final answer
    x = 15,932.61

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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.