Home / 20,257.30-30,399.27-7,109.32

Finding the Fourth Proportional to 20,257.30, 30,399.27 and 7,109.32

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Solution

The fourth proportional to 20,257.30, 30,399.27 and 7,109.32 is: 10,668.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,257.30 : 30,399.27 = 7,109.32 : x
  2. Step 2: Convert to fraction form
    20,257.30/30,399.27 = 7,109.32/x
  3. Step 3: Cross multiply
    20,257.30x = 30,399.27 × 7,109.32
  4. Step 4: Simplify right side
    20,257.30x = 216,118,138.20
  5. Step 5: Solve for x
    x = 216,118,138.20/20,257.30
  6. Step 6: Final answer
    x = 10,668.65

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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.