Home / 20,333.96-28,061.38-11,381.48

Finding the Fourth Proportional to 20,333.96, 28,061.38 and 11,381.48

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Solution

The fourth proportional to 20,333.96, 28,061.38 and 11,381.48 is: 15,706.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,333.96 : 28,061.38 = 11,381.48 : x
  2. Step 2: Convert to fraction form
    20,333.96/28,061.38 = 11,381.48/x
  3. Step 3: Cross multiply
    20,333.96x = 28,061.38 × 11,381.48
  4. Step 4: Simplify right side
    20,333.96x = 319,380,035.24
  5. Step 5: Solve for x
    x = 319,380,035.24/20,333.96
  6. Step 6: Final answer
    x = 15,706.73

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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.