Home / 20,212.12-30,328.16-9,126.52

Finding the Fourth Proportional to 20,212.12, 30,328.16 and 9,126.52

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Solution

The fourth proportional to 20,212.12, 30,328.16 and 9,126.52 is: 13,694.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212.12 : 30,328.16 = 9,126.52 : x
  2. Step 2: Convert to fraction form
    20,212.12/30,328.16 = 9,126.52/x
  3. Step 3: Cross multiply
    20,212.12x = 30,328.16 × 9,126.52
  4. Step 4: Simplify right side
    20,212.12x = 276,790,558.80
  5. Step 5: Solve for x
    x = 276,790,558.80/20,212.12
  6. Step 6: Final answer
    x = 13,694.29

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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.