Home / 20,722.26-28,600.42-12,223.86

Finding the Fourth Proportional to 20,722.26, 28,600.42 and 12,223.86

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Solution

The fourth proportional to 20,722.26, 28,600.42 and 12,223.86 is: 16,871.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.26 : 28,600.42 = 12,223.86 : x
  2. Step 2: Convert to fraction form
    20,722.26/28,600.42 = 12,223.86/x
  3. Step 3: Cross multiply
    20,722.26x = 28,600.42 × 12,223.86
  4. Step 4: Simplify right side
    20,722.26x = 349,607,530.02
  5. Step 5: Solve for x
    x = 349,607,530.02/20,722.26
  6. Step 6: Final answer
    x = 16,871.11

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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.