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Finding the Fourth Proportional to 28,322, 42,502.50 and 9,854

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Solution

The fourth proportional to 28,322, 42,502.50 and 9,854 is: 14,787.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,322 : 42,502.50 = 9,854 : x
  2. Step 2: Convert to fraction form
    28,322/42,502.50 = 9,854/x
  3. Step 3: Cross multiply
    28,322x = 42,502.50 × 9,854
  4. Step 4: Simplify right side
    28,322x = 418,819,635
  5. Step 5: Solve for x
    x = 418,819,635/28,322
  6. Step 6: Final answer
    x = 14,787.78

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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.