Home / 20,226.24-30,189.58-18,979.65

Finding the Fourth Proportional to 20,226.24, 30,189.58 and 18,979.65

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Solution

The fourth proportional to 20,226.24, 30,189.58 and 18,979.65 is: 28,328.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,226.24 : 30,189.58 = 18,979.65 : x
  2. Step 2: Convert to fraction form
    20,226.24/30,189.58 = 18,979.65/x
  3. Step 3: Cross multiply
    20,226.24x = 30,189.58 × 18,979.65
  4. Step 4: Simplify right side
    20,226.24x = 572,987,614.60
  5. Step 5: Solve for x
    x = 572,987,614.60/20,226.24
  6. Step 6: Final answer
    x = 28,328.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.