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Finding the Fourth Proportional to 19,479, 29,219.04 and 5,628

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Solution

The fourth proportional to 19,479, 29,219.04 and 5,628 is: 8,442.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,479 : 29,219.04 = 5,628 : x
  2. Step 2: Convert to fraction form
    19,479/29,219.04 = 5,628/x
  3. Step 3: Cross multiply
    19,479x = 29,219.04 × 5,628
  4. Step 4: Simplify right side
    19,479x = 164,444,757.12
  5. Step 5: Solve for x
    x = 164,444,757.12/19,479
  6. Step 6: Final answer
    x = 8,442.16

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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.