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Finding the Fourth Proportional to 18,365.76, 27,538.56 and 8,499.60

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Solution

The fourth proportional to 18,365.76, 27,538.56 and 8,499.60 is: 12,744.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,365.76 : 27,538.56 = 8,499.60 : x
  2. Step 2: Convert to fraction form
    18,365.76/27,538.56 = 8,499.60/x
  3. Step 3: Cross multiply
    18,365.76x = 27,538.56 × 8,499.60
  4. Step 4: Simplify right side
    18,365.76x = 234,066,744.58
  5. Step 5: Solve for x
    x = 234,066,744.58/18,365.76
  6. Step 6: Final answer
    x = 12,744.74

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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.