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Finding the Fourth Proportional to 18,964, 28,458.96 and 6,652

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Solution

The fourth proportional to 18,964, 28,458.96 and 6,652 is: 9,982.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,964 : 28,458.96 = 6,652 : x
  2. Step 2: Convert to fraction form
    18,964/28,458.96 = 6,652/x
  3. Step 3: Cross multiply
    18,964x = 28,458.96 × 6,652
  4. Step 4: Simplify right side
    18,964x = 189,309,001.92
  5. Step 5: Solve for x
    x = 189,309,001.92/18,964
  6. Step 6: Final answer
    x = 9,982.55

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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.