Home / 20,135.11-27,777.33-12,962.45

Finding the Fourth Proportional to 20,135.11, 27,777.33 and 12,962.45

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Solution

The fourth proportional to 20,135.11, 27,777.33 and 12,962.45 is: 17,882.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.11 : 27,777.33 = 12,962.45 : x
  2. Step 2: Convert to fraction form
    20,135.11/27,777.33 = 12,962.45/x
  3. Step 3: Cross multiply
    20,135.11x = 27,777.33 × 12,962.45
  4. Step 4: Simplify right side
    20,135.11x = 360,062,251.26
  5. Step 5: Solve for x
    x = 360,062,251.26/20,135.11
  6. Step 6: Final answer
    x = 17,882.31

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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.