Home / 20,220.19-27,903.97-11,727.35

Finding the Fourth Proportional to 20,220.19, 27,903.97 and 11,727.35

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Solution

The fourth proportional to 20,220.19, 27,903.97 and 11,727.35 is: 16,183.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.19 : 27,903.97 = 11,727.35 : x
  2. Step 2: Convert to fraction form
    20,220.19/27,903.97 = 11,727.35/x
  3. Step 3: Cross multiply
    20,220.19x = 27,903.97 × 11,727.35
  4. Step 4: Simplify right side
    20,220.19x = 327,239,483.06
  5. Step 5: Solve for x
    x = 327,239,483.06/20,220.19
  6. Step 6: Final answer
    x = 16,183.80

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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.