Home / 20,158.80-30,202.20-9,747.60

Finding the Fourth Proportional to 20,158.80, 30,202.20 and 9,747.60

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Solution

The fourth proportional to 20,158.80, 30,202.20 and 9,747.60 is: 14,603.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.80 : 30,202.20 = 9,747.60 : x
  2. Step 2: Convert to fraction form
    20,158.80/30,202.20 = 9,747.60/x
  3. Step 3: Cross multiply
    20,158.80x = 30,202.20 × 9,747.60
  4. Step 4: Simplify right side
    20,158.80x = 294,398,964.72
  5. Step 5: Solve for x
    x = 294,398,964.72/20,158.80
  6. Step 6: Final answer
    x = 14,603.99

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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.