Home / 20,085.14-27,719.15-11,135.45

Finding the Fourth Proportional to 20,085.14, 27,719.15 and 11,135.45

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Solution

The fourth proportional to 20,085.14, 27,719.15 and 11,135.45 is: 15,367.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,085.14 : 27,719.15 = 11,135.45 : x
  2. Step 2: Convert to fraction form
    20,085.14/27,719.15 = 11,135.45/x
  3. Step 3: Cross multiply
    20,085.14x = 27,719.15 × 11,135.45
  4. Step 4: Simplify right side
    20,085.14x = 308,665,014.59
  5. Step 5: Solve for x
    x = 308,665,014.59/20,085.14
  6. Step 6: Final answer
    x = 15,367.83

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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.