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Finding the Fourth Proportional to 18,698, 28,051.04 and 5,551.28

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Solution

The fourth proportional to 18,698, 28,051.04 and 5,551.28 is: 8,328.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,698 : 28,051.04 = 5,551.28 : x
  2. Step 2: Convert to fraction form
    18,698/28,051.04 = 5,551.28/x
  3. Step 3: Cross multiply
    18,698x = 28,051.04 × 5,551.28
  4. Step 4: Simplify right side
    18,698x = 155,719,177.33
  5. Step 5: Solve for x
    x = 155,719,177.33/18,698
  6. Step 6: Final answer
    x = 8,328.12

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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.