Home / 20,161.54-27,822.90-11,208.76

Finding the Fourth Proportional to 20,161.54, 27,822.90 and 11,208.76

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Solution

The fourth proportional to 20,161.54, 27,822.90 and 11,208.76 is: 15,468.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.54 : 27,822.90 = 11,208.76 : x
  2. Step 2: Convert to fraction form
    20,161.54/27,822.90 = 11,208.76/x
  3. Step 3: Cross multiply
    20,161.54x = 27,822.90 × 11,208.76
  4. Step 4: Simplify right side
    20,161.54x = 311,860,208.60
  5. Step 5: Solve for x
    x = 311,860,208.60/20,161.54
  6. Step 6: Final answer
    x = 15,468.07

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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.