Home / 20,722.58-28,600.89-12,224.19

Finding the Fourth Proportional to 20,722.58, 28,600.89 and 12,224.19

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Solution

The fourth proportional to 20,722.58, 28,600.89 and 12,224.19 is: 16,871.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.58 : 28,600.89 = 12,224.19 : x
  2. Step 2: Convert to fraction form
    20,722.58/28,600.89 = 12,224.19/x
  3. Step 3: Cross multiply
    20,722.58x = 28,600.89 × 12,224.19
  4. Step 4: Simplify right side
    20,722.58x = 349,622,713.53
  5. Step 5: Solve for x
    x = 349,622,713.53/20,722.58
  6. Step 6: Final answer
    x = 16,871.58

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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.