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Finding the Fourth Proportional to 18,587.73, 27,881.64 and 13,065.79

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Solution

The fourth proportional to 18,587.73, 27,881.64 and 13,065.79 is: 19,598.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,587.73 : 27,881.64 = 13,065.79 : x
  2. Step 2: Convert to fraction form
    18,587.73/27,881.64 = 13,065.79/x
  3. Step 3: Cross multiply
    18,587.73x = 27,881.64 × 13,065.79
  4. Step 4: Simplify right side
    18,587.73x = 364,295,583.39
  5. Step 5: Solve for x
    x = 364,295,583.39/18,587.73
  6. Step 6: Final answer
    x = 19,598.71

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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.