Home / 20,620.24-30,682.34-20,551.12

Finding the Fourth Proportional to 20,620.24, 30,682.34 and 20,551.12

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Solution

The fourth proportional to 20,620.24, 30,682.34 and 20,551.12 is: 30,579.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.24 : 30,682.34 = 20,551.12 : x
  2. Step 2: Convert to fraction form
    20,620.24/30,682.34 = 20,551.12/x
  3. Step 3: Cross multiply
    20,620.24x = 30,682.34 × 20,551.12
  4. Step 4: Simplify right side
    20,620.24x = 630,556,451.22
  5. Step 5: Solve for x
    x = 630,556,451.22/20,620.24
  6. Step 6: Final answer
    x = 30,579.49

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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.