Home / 20,226.35-30,328.54-9,120.04

Finding the Fourth Proportional to 20,226.35, 30,328.54 and 9,120.04

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Solution

The fourth proportional to 20,226.35, 30,328.54 and 9,120.04 is: 13,675.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,226.35 : 30,328.54 = 9,120.04 : x
  2. Step 2: Convert to fraction form
    20,226.35/30,328.54 = 9,120.04/x
  3. Step 3: Cross multiply
    20,226.35x = 30,328.54 × 9,120.04
  4. Step 4: Simplify right side
    20,226.35x = 276,597,399.32
  5. Step 5: Solve for x
    x = 276,597,399.32/20,226.35
  6. Step 6: Final answer
    x = 13,675.10

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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.