Home / 20,211.79-27,891.35-11,259.22

Finding the Fourth Proportional to 20,211.79, 27,891.35 and 11,259.22

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Solution

The fourth proportional to 20,211.79, 27,891.35 and 11,259.22 is: 15,537.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.79 : 27,891.35 = 11,259.22 : x
  2. Step 2: Convert to fraction form
    20,211.79/27,891.35 = 11,259.22/x
  3. Step 3: Cross multiply
    20,211.79x = 27,891.35 × 11,259.22
  4. Step 4: Simplify right side
    20,211.79x = 314,034,845.75
  5. Step 5: Solve for x
    x = 314,034,845.75/20,211.79
  6. Step 6: Final answer
    x = 15,537.21

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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.