Home / 20,864.96-28,794.72-11,432.96

Finding the Fourth Proportional to 20,864.96, 28,794.72 and 11,432.96

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Solution

The fourth proportional to 20,864.96, 28,794.72 and 11,432.96 is: 15,778.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.96 : 28,794.72 = 11,432.96 : x
  2. Step 2: Convert to fraction form
    20,864.96/28,794.72 = 11,432.96/x
  3. Step 3: Cross multiply
    20,864.96x = 28,794.72 × 11,432.96
  4. Step 4: Simplify right side
    20,864.96x = 329,208,881.97
  5. Step 5: Solve for x
    x = 329,208,881.97/20,864.96
  6. Step 6: Final answer
    x = 15,778.07

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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.