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Finding the Fourth Proportional to 20,043.08, 27,659.30 and 11,211.08

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Solution

The fourth proportional to 20,043.08, 27,659.30 and 11,211.08 is: 15,471.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,043.08 : 27,659.30 = 11,211.08 : x
  2. Step 2: Convert to fraction form
    20,043.08/27,659.30 = 11,211.08/x
  3. Step 3: Cross multiply
    20,043.08x = 27,659.30 × 11,211.08
  4. Step 4: Simplify right side
    20,043.08x = 310,090,625.04
  5. Step 5: Solve for x
    x = 310,090,625.04/20,043.08
  6. Step 6: Final answer
    x = 15,471.21

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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.