Home / 55,247.20-82,903.20-20,190.40

Finding the Fourth Proportional to 55,247.20, 82,903.20 and 20,190.40

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Solution

The fourth proportional to 55,247.20, 82,903.20 and 20,190.40 is: 30,297.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,247.20 : 82,903.20 = 20,190.40 : x
  2. Step 2: Convert to fraction form
    55,247.20/82,903.20 = 20,190.40/x
  3. Step 3: Cross multiply
    55,247.20x = 82,903.20 × 20,190.40
  4. Step 4: Simplify right side
    55,247.20x = 1,673,848,769.28
  5. Step 5: Solve for x
    x = 1,673,848,769.28/55,247.20
  6. Step 6: Final answer
    x = 30,297.44

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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.