Home / 18,961.09-26,171.51-11,005.88

Finding the Fourth Proportional to 18,961.09, 26,171.51 and 11,005.88

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Solution

The fourth proportional to 18,961.09, 26,171.51 and 11,005.88 is: 15,191.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,961.09 : 26,171.51 = 11,005.88 : x
  2. Step 2: Convert to fraction form
    18,961.09/26,171.51 = 11,005.88/x
  3. Step 3: Cross multiply
    18,961.09x = 26,171.51 × 11,005.88
  4. Step 4: Simplify right side
    18,961.09x = 288,040,312.59
  5. Step 5: Solve for x
    x = 288,040,312.59/18,961.09
  6. Step 6: Final answer
    x = 15,191.13

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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.