Home / 20,220.11-27,904.02-11,722.70

Finding the Fourth Proportional to 20,220.11, 27,904.02 and 11,722.70

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Solution

The fourth proportional to 20,220.11, 27,904.02 and 11,722.70 is: 16,177.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.11 : 27,904.02 = 11,722.70 : x
  2. Step 2: Convert to fraction form
    20,220.11/27,904.02 = 11,722.70/x
  3. Step 3: Cross multiply
    20,220.11x = 27,904.02 × 11,722.70
  4. Step 4: Simplify right side
    20,220.11x = 327,110,455.25
  5. Step 5: Solve for x
    x = 327,110,455.25/20,220.11
  6. Step 6: Final answer
    x = 16,177.48

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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.