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Finding the Fourth Proportional to 30,981.66, 46,357.65 and 18,508.47

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Solution

The fourth proportional to 30,981.66, 46,357.65 and 18,508.47 is: 27,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,981.66 : 46,357.65 = 18,508.47 : x
  2. Step 2: Convert to fraction form
    30,981.66/46,357.65 = 18,508.47/x
  3. Step 3: Cross multiply
    30,981.66x = 46,357.65 × 18,508.47
  4. Step 4: Simplify right side
    30,981.66x = 858,009,174.30
  5. Step 5: Solve for x
    x = 858,009,174.30/30,981.66
  6. Step 6: Final answer
    x = 27,694.10

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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.