Home / 20,119.77-27,765.18-11,167.25

Finding the Fourth Proportional to 20,119.77, 27,765.18 and 11,167.25

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Solution

The fourth proportional to 20,119.77, 27,765.18 and 11,167.25 is: 15,410.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.77 : 27,765.18 = 11,167.25 : x
  2. Step 2: Convert to fraction form
    20,119.77/27,765.18 = 11,167.25/x
  3. Step 3: Cross multiply
    20,119.77x = 27,765.18 × 11,167.25
  4. Step 4: Simplify right side
    20,119.77x = 310,060,567.53
  5. Step 5: Solve for x
    x = 310,060,567.53/20,119.77
  6. Step 6: Final answer
    x = 15,410.74

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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.