Home / 20,767.05-28,655.64-11,814.12

Finding the Fourth Proportional to 20,767.05, 28,655.64 and 11,814.12

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Solution

The fourth proportional to 20,767.05, 28,655.64 and 11,814.12 is: 16,301.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,767.05 : 28,655.64 = 11,814.12 : x
  2. Step 2: Convert to fraction form
    20,767.05/28,655.64 = 11,814.12/x
  3. Step 3: Cross multiply
    20,767.05x = 28,655.64 × 11,814.12
  4. Step 4: Simplify right side
    20,767.05x = 338,541,169.64
  5. Step 5: Solve for x
    x = 338,541,169.64/20,767.05
  6. Step 6: Final answer
    x = 16,301.84

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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.