Home / 20,320.08-30,488.22-7,173.78

Finding the Fourth Proportional to 20,320.08, 30,488.22 and 7,173.78

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Solution

The fourth proportional to 20,320.08, 30,488.22 and 7,173.78 is: 10,763.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.08 : 30,488.22 = 7,173.78 : x
  2. Step 2: Convert to fraction form
    20,320.08/30,488.22 = 7,173.78/x
  3. Step 3: Cross multiply
    20,320.08x = 30,488.22 × 7,173.78
  4. Step 4: Simplify right side
    20,320.08x = 218,715,782.87
  5. Step 5: Solve for x
    x = 218,715,782.87/20,320.08
  6. Step 6: Final answer
    x = 10,763.53

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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.