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Finding the Fourth Proportional to 39,471, 59,235.72 and 18,694.56

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Solution

The fourth proportional to 39,471, 59,235.72 and 18,694.56 is: 28,055.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,471 : 59,235.72 = 18,694.56 : x
  2. Step 2: Convert to fraction form
    39,471/59,235.72 = 18,694.56/x
  3. Step 3: Cross multiply
    39,471x = 59,235.72 × 18,694.56
  4. Step 4: Simplify right side
    39,471x = 1,107,385,721.68
  5. Step 5: Solve for x
    x = 1,107,385,721.68/39,471
  6. Step 6: Final answer
    x = 28,055.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.