Home / 20,976.93-28,949.09-11,545.83

Finding the Fourth Proportional to 20,976.93, 28,949.09 and 11,545.83

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Solution

The fourth proportional to 20,976.93, 28,949.09 and 11,545.83 is: 15,933.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976.93 : 28,949.09 = 11,545.83 : x
  2. Step 2: Convert to fraction form
    20,976.93/28,949.09 = 11,545.83/x
  3. Step 3: Cross multiply
    20,976.93x = 28,949.09 × 11,545.83
  4. Step 4: Simplify right side
    20,976.93x = 334,241,214.07
  5. Step 5: Solve for x
    x = 334,241,214.07/20,976.93
  6. Step 6: Final answer
    x = 15,933.75

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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.