Home / 20,063.78-27,687.67-11,111.10

Finding the Fourth Proportional to 20,063.78, 27,687.67 and 11,111.10

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Solution

The fourth proportional to 20,063.78, 27,687.67 and 11,111.10 is: 15,333.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,063.78 : 27,687.67 = 11,111.10 : x
  2. Step 2: Convert to fraction form
    20,063.78/27,687.67 = 11,111.10/x
  3. Step 3: Cross multiply
    20,063.78x = 27,687.67 × 11,111.10
  4. Step 4: Simplify right side
    20,063.78x = 307,640,470.14
  5. Step 5: Solve for x
    x = 307,640,470.14/20,063.78
  6. Step 6: Final answer
    x = 15,333.13

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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.