Home / 20,085.49-27,719.31-11,133.37

Finding the Fourth Proportional to 20,085.49, 27,719.31 and 11,133.37

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Solution

The fourth proportional to 20,085.49, 27,719.31 and 11,133.37 is: 15,364.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,085.49 : 27,719.31 = 11,133.37 : x
  2. Step 2: Convert to fraction form
    20,085.49/27,719.31 = 11,133.37/x
  3. Step 3: Cross multiply
    20,085.49x = 27,719.31 × 11,133.37
  4. Step 4: Simplify right side
    20,085.49x = 308,609,334.37
  5. Step 5: Solve for x
    x = 308,609,334.37/20,085.49
  6. Step 6: Final answer
    x = 15,364.79

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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.