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Finding the Fourth Proportional to 18,066.59, 27,071.79 and 12,530.75

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Solution

The fourth proportional to 18,066.59, 27,071.79 and 12,530.75 is: 18,776.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,066.59 : 27,071.79 = 12,530.75 : x
  2. Step 2: Convert to fraction form
    18,066.59/27,071.79 = 12,530.75/x
  3. Step 3: Cross multiply
    18,066.59x = 27,071.79 × 12,530.75
  4. Step 4: Simplify right side
    18,066.59x = 339,229,832.54
  5. Step 5: Solve for x
    x = 339,229,832.54/18,066.59
  6. Step 6: Final answer
    x = 18,776.64

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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.