Home / 18,947.35-28,412.38-9,091.27

Finding the Fourth Proportional to 18,947.35, 28,412.38 and 9,091.27

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Solution

The fourth proportional to 18,947.35, 28,412.38 and 9,091.27 is: 13,632.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.35 : 28,412.38 = 9,091.27 : x
  2. Step 2: Convert to fraction form
    18,947.35/28,412.38 = 9,091.27/x
  3. Step 3: Cross multiply
    18,947.35x = 28,412.38 × 9,091.27
  4. Step 4: Simplify right side
    18,947.35x = 258,304,453.13
  5. Step 5: Solve for x
    x = 258,304,453.13/18,947.35
  6. Step 6: Final answer
    x = 13,632.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.