Home / 19,172.20-28,748.56-8,775.04

Finding the Fourth Proportional to 19,172.20, 28,748.56 and 8,775.04

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Solution

The fourth proportional to 19,172.20, 28,748.56 and 8,775.04 is: 13,158.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,172.20 : 28,748.56 = 8,775.04 : x
  2. Step 2: Convert to fraction form
    19,172.20/28,748.56 = 8,775.04/x
  3. Step 3: Cross multiply
    19,172.20x = 28,748.56 × 8,775.04
  4. Step 4: Simplify right side
    19,172.20x = 252,269,763.94
  5. Step 5: Solve for x
    x = 252,269,763.94/19,172.20
  6. Step 6: Final answer
    x = 13,158.10

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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.