Home / 20,439.44-30,667.80-8,758.16

Finding the Fourth Proportional to 20,439.44, 30,667.80 and 8,758.16

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Solution

The fourth proportional to 20,439.44, 30,667.80 and 8,758.16 is: 13,140.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.44 : 30,667.80 = 8,758.16 : x
  2. Step 2: Convert to fraction form
    20,439.44/30,667.80 = 8,758.16/x
  3. Step 3: Cross multiply
    20,439.44x = 30,667.80 × 8,758.16
  4. Step 4: Simplify right side
    20,439.44x = 268,593,499.25
  5. Step 5: Solve for x
    x = 268,593,499.25/20,439.44
  6. Step 6: Final answer
    x = 13,140.94

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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.