Home / 20,131.06-27,779.93-11,179.13

Finding the Fourth Proportional to 20,131.06, 27,779.93 and 11,179.13

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Solution

The fourth proportional to 20,131.06, 27,779.93 and 11,179.13 is: 15,426.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.06 : 27,779.93 = 11,179.13 : x
  2. Step 2: Convert to fraction form
    20,131.06/27,779.93 = 11,179.13/x
  3. Step 3: Cross multiply
    20,131.06x = 27,779.93 × 11,179.13
  4. Step 4: Simplify right side
    20,131.06x = 310,555,254.07
  5. Step 5: Solve for x
    x = 310,555,254.07/20,131.06
  6. Step 6: Final answer
    x = 15,426.68

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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.