Home / 20,911.08-29,057.39-20,649.96

Finding the Fourth Proportional to 20,911.08, 29,057.39 and 20,649.96

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Solution

The fourth proportional to 20,911.08, 29,057.39 and 20,649.96 is: 28,694.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,911.08 : 29,057.39 = 20,649.96 : x
  2. Step 2: Convert to fraction form
    20,911.08/29,057.39 = 20,649.96/x
  3. Step 3: Cross multiply
    20,911.08x = 29,057.39 × 20,649.96
  4. Step 4: Simplify right side
    20,911.08x = 600,033,941.20
  5. Step 5: Solve for x
    x = 600,033,941.20/20,911.08
  6. Step 6: Final answer
    x = 28,694.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.