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Finding the Fourth Proportional to 31,198.80, 43,042.08 and 19,241.40

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Solution

The fourth proportional to 31,198.80, 43,042.08 and 19,241.40 is: 26,545.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,198.80 : 43,042.08 = 19,241.40 : x
  2. Step 2: Convert to fraction form
    31,198.80/43,042.08 = 19,241.40/x
  3. Step 3: Cross multiply
    31,198.80x = 43,042.08 × 19,241.40
  4. Step 4: Simplify right side
    31,198.80x = 828,189,878.11
  5. Step 5: Solve for x
    x = 828,189,878.11/31,198.80
  6. Step 6: Final answer
    x = 26,545.57

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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.