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Finding the Fourth Proportional to 29,707.93, 40,981.62 and 20,144.59

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Solution

The fourth proportional to 29,707.93, 40,981.62 and 20,144.59 is: 27,789.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,707.93 : 40,981.62 = 20,144.59 : x
  2. Step 2: Convert to fraction form
    29,707.93/40,981.62 = 20,144.59/x
  3. Step 3: Cross multiply
    29,707.93x = 40,981.62 × 20,144.59
  4. Step 4: Simplify right side
    29,707.93x = 825,557,932.44
  5. Step 5: Solve for x
    x = 825,557,932.44/29,707.93
  6. Step 6: Final answer
    x = 27,789.14

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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.