Home / 20,864.86-28,793.49-11,433.40

Finding the Fourth Proportional to 20,864.86, 28,793.49 and 11,433.40

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Solution

The fourth proportional to 20,864.86, 28,793.49 and 11,433.40 is: 15,778.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.86 : 28,793.49 = 11,433.40 : x
  2. Step 2: Convert to fraction form
    20,864.86/28,793.49 = 11,433.40/x
  3. Step 3: Cross multiply
    20,864.86x = 28,793.49 × 11,433.40
  4. Step 4: Simplify right side
    20,864.86x = 329,207,488.57
  5. Step 5: Solve for x
    x = 329,207,488.57/20,864.86
  6. Step 6: Final answer
    x = 15,778.08

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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.