Home / 20,086.40-27,719.45-11,134.07

Finding the Fourth Proportional to 20,086.40, 27,719.45 and 11,134.07

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Solution

The fourth proportional to 20,086.40, 27,719.45 and 11,134.07 is: 15,365.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,086.40 : 27,719.45 = 11,134.07 : x
  2. Step 2: Convert to fraction form
    20,086.40/27,719.45 = 11,134.07/x
  3. Step 3: Cross multiply
    20,086.40x = 27,719.45 × 11,134.07
  4. Step 4: Simplify right side
    20,086.40x = 308,630,102.39
  5. Step 5: Solve for x
    x = 308,630,102.39/20,086.40
  6. Step 6: Final answer
    x = 15,365.13

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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.