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Finding the Fourth Proportional to 18,078.59, 27,145.43 and 17,187.59

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Solution

The fourth proportional to 18,078.59, 27,145.43 and 17,187.59 is: 25,807.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,078.59 : 27,145.43 = 17,187.59 : x
  2. Step 2: Convert to fraction form
    18,078.59/27,145.43 = 17,187.59/x
  3. Step 3: Cross multiply
    18,078.59x = 27,145.43 × 17,187.59
  4. Step 4: Simplify right side
    18,078.59x = 466,564,521.21
  5. Step 5: Solve for x
    x = 466,564,521.21/18,078.59
  6. Step 6: Final answer
    x = 25,807.57

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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.