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Finding the Fourth Proportional to 33,990.55, 46,910.13 and 20,565.11

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Solution

The fourth proportional to 33,990.55, 46,910.13 and 20,565.11 is: 28,381.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,990.55 : 46,910.13 = 20,565.11 : x
  2. Step 2: Convert to fraction form
    33,990.55/46,910.13 = 20,565.11/x
  3. Step 3: Cross multiply
    33,990.55x = 46,910.13 × 20,565.11
  4. Step 4: Simplify right side
    33,990.55x = 964,711,983.56
  5. Step 5: Solve for x
    x = 964,711,983.56/33,990.55
  6. Step 6: Final answer
    x = 28,381.77

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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.