Home / 20,967.12-28,934.82-11,535.75

Finding the Fourth Proportional to 20,967.12, 28,934.82 and 11,535.75

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Solution

The fourth proportional to 20,967.12, 28,934.82 and 11,535.75 is: 15,919.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,967.12 : 28,934.82 = 11,535.75 : x
  2. Step 2: Convert to fraction form
    20,967.12/28,934.82 = 11,535.75/x
  3. Step 3: Cross multiply
    20,967.12x = 28,934.82 × 11,535.75
  4. Step 4: Simplify right side
    20,967.12x = 333,784,849.82
  5. Step 5: Solve for x
    x = 333,784,849.82/20,967.12
  6. Step 6: Final answer
    x = 15,919.44

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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.