Home / 18,947.20-26,163.66-11,885.80

Finding the Fourth Proportional to 18,947.20, 26,163.66 and 11,885.80

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Solution

The fourth proportional to 18,947.20, 26,163.66 and 11,885.80 is: 16,412.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.20 : 26,163.66 = 11,885.80 : x
  2. Step 2: Convert to fraction form
    18,947.20/26,163.66 = 11,885.80/x
  3. Step 3: Cross multiply
    18,947.20x = 26,163.66 × 11,885.80
  4. Step 4: Simplify right side
    18,947.20x = 310,976,030.03
  5. Step 5: Solve for x
    x = 310,976,030.03/18,947.20
  6. Step 6: Final answer
    x = 16,412.77

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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.