Home / 20,333.89-28,060.48-11,381.38

Finding the Fourth Proportional to 20,333.89, 28,060.48 and 11,381.38

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Solution

The fourth proportional to 20,333.89, 28,060.48 and 11,381.38 is: 15,706.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,333.89 : 28,060.48 = 11,381.38 : x
  2. Step 2: Convert to fraction form
    20,333.89/28,060.48 = 11,381.38/x
  3. Step 3: Cross multiply
    20,333.89x = 28,060.48 × 11,381.38
  4. Step 4: Simplify right side
    20,333.89x = 319,366,865.92
  5. Step 5: Solve for x
    x = 319,366,865.92/20,333.89
  6. Step 6: Final answer
    x = 15,706.14

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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.