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Finding the Fourth Proportional to 18,854, 28,282.31 and 5,707.36

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Solution

The fourth proportional to 18,854, 28,282.31 and 5,707.36 is: 8,561.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,854 : 28,282.31 = 5,707.36 : x
  2. Step 2: Convert to fraction form
    18,854/28,282.31 = 5,707.36/x
  3. Step 3: Cross multiply
    18,854x = 28,282.31 × 5,707.36
  4. Step 4: Simplify right side
    18,854x = 161,417,324.80
  5. Step 5: Solve for x
    x = 161,417,324.80/18,854
  6. Step 6: Final answer
    x = 8,561.44

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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.