Home / 20,230.16-30,338.68-7,749.52

Finding the Fourth Proportional to 20,230.16, 30,338.68 and 7,749.52

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Solution

The fourth proportional to 20,230.16, 30,338.68 and 7,749.52 is: 11,621.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230.16 : 30,338.68 = 7,749.52 : x
  2. Step 2: Convert to fraction form
    20,230.16/30,338.68 = 7,749.52/x
  3. Step 3: Cross multiply
    20,230.16x = 30,338.68 × 7,749.52
  4. Step 4: Simplify right side
    20,230.16x = 235,110,207.43
  5. Step 5: Solve for x
    x = 235,110,207.43/20,230.16
  6. Step 6: Final answer
    x = 11,621.77

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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.