Home / 20,165.28-30,228.48-9,771.36

Finding the Fourth Proportional to 20,165.28, 30,228.48 and 9,771.36

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Solution

The fourth proportional to 20,165.28, 30,228.48 and 9,771.36 is: 14,647.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.28 : 30,228.48 = 9,771.36 : x
  2. Step 2: Convert to fraction form
    20,165.28/30,228.48 = 9,771.36/x
  3. Step 3: Cross multiply
    20,165.28x = 30,228.48 × 9,771.36
  4. Step 4: Simplify right side
    20,165.28x = 295,373,360.33
  5. Step 5: Solve for x
    x = 295,373,360.33/20,165.28
  6. Step 6: Final answer
    x = 14,647.62

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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.