Home / 20,155.16-30,232.80-6,115.30

Finding the Fourth Proportional to 20,155.16, 30,232.80 and 6,115.30

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Solution

The fourth proportional to 20,155.16, 30,232.80 and 6,115.30 is: 9,172.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.16 : 30,232.80 = 6,115.30 : x
  2. Step 2: Convert to fraction form
    20,155.16/30,232.80 = 6,115.30/x
  3. Step 3: Cross multiply
    20,155.16x = 30,232.80 × 6,115.30
  4. Step 4: Simplify right side
    20,155.16x = 184,882,702.56
  5. Step 5: Solve for x
    x = 184,882,702.56/20,155.16
  6. Step 6: Final answer
    x = 9,172.97

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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.