Home / 20,757.91-28,649.58-12,259.46

Finding the Fourth Proportional to 20,757.91, 28,649.58 and 12,259.46

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Solution

The fourth proportional to 20,757.91, 28,649.58 and 12,259.46 is: 16,920.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757.91 : 28,649.58 = 12,259.46 : x
  2. Step 2: Convert to fraction form
    20,757.91/28,649.58 = 12,259.46/x
  3. Step 3: Cross multiply
    20,757.91x = 28,649.58 × 12,259.46
  4. Step 4: Simplify right side
    20,757.91x = 351,228,380.03
  5. Step 5: Solve for x
    x = 351,228,380.03/20,757.91
  6. Step 6: Final answer
    x = 16,920.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.