Home / 20,667.91-28,521.12-11,716.24

Finding the Fourth Proportional to 20,667.91, 28,521.12 and 11,716.24

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Solution

The fourth proportional to 20,667.91, 28,521.12 and 11,716.24 is: 16,168.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,667.91 : 28,521.12 = 11,716.24 : x
  2. Step 2: Convert to fraction form
    20,667.91/28,521.12 = 11,716.24/x
  3. Step 3: Cross multiply
    20,667.91x = 28,521.12 × 11,716.24
  4. Step 4: Simplify right side
    20,667.91x = 334,160,286.99
  5. Step 5: Solve for x
    x = 334,160,286.99/20,667.91
  6. Step 6: Final answer
    x = 16,168.07

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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.