Home / 20,864.01-28,793.16-11,911.59

Finding the Fourth Proportional to 20,864.01, 28,793.16 and 11,911.59

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Solution

The fourth proportional to 20,864.01, 28,793.16 and 11,911.59 is: 16,438.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.01 : 28,793.16 = 11,911.59 : x
  2. Step 2: Convert to fraction form
    20,864.01/28,793.16 = 11,911.59/x
  3. Step 3: Cross multiply
    20,864.01x = 28,793.16 × 11,911.59
  4. Step 4: Simplify right side
    20,864.01x = 342,972,316.72
  5. Step 5: Solve for x
    x = 342,972,316.72/20,864.01
  6. Step 6: Final answer
    x = 16,438.47

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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.