Home / 20,767.12-28,658.62-11,335.68

Finding the Fourth Proportional to 20,767.12, 28,658.62 and 11,335.68

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Solution

The fourth proportional to 20,767.12, 28,658.62 and 11,335.68 is: 15,643.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,767.12 : 28,658.62 = 11,335.68 : x
  2. Step 2: Convert to fraction form
    20,767.12/28,658.62 = 11,335.68/x
  3. Step 3: Cross multiply
    20,767.12x = 28,658.62 × 11,335.68
  4. Step 4: Simplify right side
    20,767.12x = 324,865,008.45
  5. Step 5: Solve for x
    x = 324,865,008.45/20,767.12
  6. Step 6: Final answer
    x = 15,643.24

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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.