Home / 20,062.78-27,686.30-11,110.09

Finding the Fourth Proportional to 20,062.78, 27,686.30 and 11,110.09

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Solution

The fourth proportional to 20,062.78, 27,686.30 and 11,110.09 is: 15,331.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,062.78 : 27,686.30 = 11,110.09 : x
  2. Step 2: Convert to fraction form
    20,062.78/27,686.30 = 11,110.09/x
  3. Step 3: Cross multiply
    20,062.78x = 27,686.30 × 11,110.09
  4. Step 4: Simplify right side
    20,062.78x = 307,597,284.77
  5. Step 5: Solve for x
    x = 307,597,284.77/20,062.78
  6. Step 6: Final answer
    x = 15,331.74

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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.