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Finding the Fourth Proportional to 20,291.91, 30,444.78 and 10,932.89

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Solution

The fourth proportional to 20,291.91, 30,444.78 and 10,932.89 is: 16,403.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,291.91 : 30,444.78 = 10,932.89 : x
  2. Step 2: Convert to fraction form
    20,291.91/30,444.78 = 10,932.89/x
  3. Step 3: Cross multiply
    20,291.91x = 30,444.78 × 10,932.89
  4. Step 4: Simplify right side
    20,291.91x = 332,849,433.76
  5. Step 5: Solve for x
    x = 332,849,433.76/20,291.91
  6. Step 6: Final answer
    x = 16,403.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.