Home / 20,063.76-27,687.78-11,111.64

Finding the Fourth Proportional to 20,063.76, 27,687.78 and 11,111.64

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Solution

The fourth proportional to 20,063.76, 27,687.78 and 11,111.64 is: 15,333.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,063.76 : 27,687.78 = 11,111.64 : x
  2. Step 2: Convert to fraction form
    20,063.76/27,687.78 = 11,111.64/x
  3. Step 3: Cross multiply
    20,063.76x = 27,687.78 × 11,111.64
  4. Step 4: Simplify right side
    20,063.76x = 307,656,643.76
  5. Step 5: Solve for x
    x = 307,656,643.76/20,063.76
  6. Step 6: Final answer
    x = 15,333.95

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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.