Home / 20,112.19-27,754.45-11,159.51

Finding the Fourth Proportional to 20,112.19, 27,754.45 and 11,159.51

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Solution

The fourth proportional to 20,112.19, 27,754.45 and 11,159.51 is: 15,399.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.19 : 27,754.45 = 11,159.51 : x
  2. Step 2: Convert to fraction form
    20,112.19/27,754.45 = 11,159.51/x
  3. Step 3: Cross multiply
    20,112.19x = 27,754.45 × 11,159.51
  4. Step 4: Simplify right side
    20,112.19x = 309,726,062.32
  5. Step 5: Solve for x
    x = 309,726,062.32/20,112.19
  6. Step 6: Final answer
    x = 15,399.92

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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.