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Finding the Fourth Proportional to 18,558.60, 27,837.90 and 17,246.40

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Solution

The fourth proportional to 18,558.60, 27,837.90 and 17,246.40 is: 25,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,558.60 : 27,837.90 = 17,246.40 : x
  2. Step 2: Convert to fraction form
    18,558.60/27,837.90 = 17,246.40/x
  3. Step 3: Cross multiply
    18,558.60x = 27,837.90 × 17,246.40
  4. Step 4: Simplify right side
    18,558.60x = 480,103,558.56
  5. Step 5: Solve for x
    x = 480,103,558.56/18,558.60
  6. Step 6: Final answer
    x = 25,869.60

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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.