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Finding the Fourth Proportional to 19,172.16, 28,748.52 and 8,775

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Solution

The fourth proportional to 19,172.16, 28,748.52 and 8,775 is: 13,158.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,172.16 : 28,748.52 = 8,775 : x
  2. Step 2: Convert to fraction form
    19,172.16/28,748.52 = 8,775/x
  3. Step 3: Cross multiply
    19,172.16x = 28,748.52 × 8,775
  4. Step 4: Simplify right side
    19,172.16x = 252,268,263
  5. Step 5: Solve for x
    x = 252,268,263/19,172.16
  6. Step 6: Final answer
    x = 13,158.05

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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.