Home / 20,154.72-27,811.41-11,655.54

Finding the Fourth Proportional to 20,154.72, 27,811.41 and 11,655.54

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Solution

The fourth proportional to 20,154.72, 27,811.41 and 11,655.54 is: 16,083.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,154.72 : 27,811.41 = 11,655.54 : x
  2. Step 2: Convert to fraction form
    20,154.72/27,811.41 = 11,655.54/x
  3. Step 3: Cross multiply
    20,154.72x = 27,811.41 × 11,655.54
  4. Step 4: Simplify right side
    20,154.72x = 324,157,001.71
  5. Step 5: Solve for x
    x = 324,157,001.71/20,154.72
  6. Step 6: Final answer
    x = 16,083.43

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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.