Home / 20,965.87-28,934.31-11,535.04

Finding the Fourth Proportional to 20,965.87, 28,934.31 and 11,535.04

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Solution

The fourth proportional to 20,965.87, 28,934.31 and 11,535.04 is: 15,919.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,965.87 : 28,934.31 = 11,535.04 : x
  2. Step 2: Convert to fraction form
    20,965.87/28,934.31 = 11,535.04/x
  3. Step 3: Cross multiply
    20,965.87x = 28,934.31 × 11,535.04
  4. Step 4: Simplify right side
    20,965.87x = 333,758,423.22
  5. Step 5: Solve for x
    x = 333,758,423.22/20,965.87
  6. Step 6: Final answer
    x = 15,919.13

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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.