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Finding the Fourth Proportional to 18,272.96, 27,402.72 and 8,907.20

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Solution

The fourth proportional to 18,272.96, 27,402.72 and 8,907.20 is: 13,357.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,272.96 : 27,402.72 = 8,907.20 : x
  2. Step 2: Convert to fraction form
    18,272.96/27,402.72 = 8,907.20/x
  3. Step 3: Cross multiply
    18,272.96x = 27,402.72 × 8,907.20
  4. Step 4: Simplify right side
    18,272.96x = 244,081,507.58
  5. Step 5: Solve for x
    x = 244,081,507.58/18,272.96
  6. Step 6: Final answer
    x = 13,357.52

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1.5x scale

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.