Home / 18,991.41-26,171.15-13,676.19

Finding the Fourth Proportional to 18,991.41, 26,171.15 and 13,676.19

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Solution

The fourth proportional to 18,991.41, 26,171.15 and 13,676.19 is: 18,846.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,991.41 : 26,171.15 = 13,676.19 : x
  2. Step 2: Convert to fraction form
    18,991.41/26,171.15 = 13,676.19/x
  3. Step 3: Cross multiply
    18,991.41x = 26,171.15 × 13,676.19
  4. Step 4: Simplify right side
    18,991.41x = 357,921,551.54
  5. Step 5: Solve for x
    x = 357,921,551.54/18,991.41
  6. Step 6: Final answer
    x = 18,846.50

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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.