Home / 20,211.96-27,891.80-11,259.02

Finding the Fourth Proportional to 20,211.96, 27,891.80 and 11,259.02

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Solution

The fourth proportional to 20,211.96, 27,891.80 and 11,259.02 is: 15,537.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.96 : 27,891.80 = 11,259.02 : x
  2. Step 2: Convert to fraction form
    20,211.96/27,891.80 = 11,259.02/x
  3. Step 3: Cross multiply
    20,211.96x = 27,891.80 × 11,259.02
  4. Step 4: Simplify right side
    20,211.96x = 314,034,334.04
  5. Step 5: Solve for x
    x = 314,034,334.04/20,211.96
  6. Step 6: Final answer
    x = 15,537.05

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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.