Home / 20,926.91-28,879.16-11,496.08

Finding the Fourth Proportional to 20,926.91, 28,879.16 and 11,496.08

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Solution

The fourth proportional to 20,926.91, 28,879.16 and 11,496.08 is: 15,864.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.91 : 28,879.16 = 11,496.08 : x
  2. Step 2: Convert to fraction form
    20,926.91/28,879.16 = 11,496.08/x
  3. Step 3: Cross multiply
    20,926.91x = 28,879.16 × 11,496.08
  4. Step 4: Simplify right side
    20,926.91x = 331,997,076.21
  5. Step 5: Solve for x
    x = 331,997,076.21/20,926.91
  6. Step 6: Final answer
    x = 15,864.60

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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.