Home / 20,190.08-30,286.16-6,340.16

Finding the Fourth Proportional to 20,190.08, 30,286.16 and 6,340.16

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Solution

The fourth proportional to 20,190.08, 30,286.16 and 6,340.16 is: 9,510.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.08 : 30,286.16 = 6,340.16 : x
  2. Step 2: Convert to fraction form
    20,190.08/30,286.16 = 6,340.16/x
  3. Step 3: Cross multiply
    20,190.08x = 30,286.16 × 6,340.16
  4. Step 4: Simplify right side
    20,190.08x = 192,019,100.19
  5. Step 5: Solve for x
    x = 192,019,100.19/20,190.08
  6. Step 6: Final answer
    x = 9,510.57

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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.