Home / 20,112.13-27,754.84-11,159.63

Finding the Fourth Proportional to 20,112.13, 27,754.84 and 11,159.63

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Solution

The fourth proportional to 20,112.13, 27,754.84 and 11,159.63 is: 15,400.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.13 : 27,754.84 = 11,159.63 : x
  2. Step 2: Convert to fraction form
    20,112.13/27,754.84 = 11,159.63/x
  3. Step 3: Cross multiply
    20,112.13x = 27,754.84 × 11,159.63
  4. Step 4: Simplify right side
    20,112.13x = 309,733,647.82
  5. Step 5: Solve for x
    x = 309,733,647.82/20,112.13
  6. Step 6: Final answer
    x = 15,400.34

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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.