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Finding the Fourth Proportional to 18,387.68, 27,584.01 and 5,903.55

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Solution

The fourth proportional to 18,387.68, 27,584.01 and 5,903.55 is: 8,856.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.68 : 27,584.01 = 5,903.55 : x
  2. Step 2: Convert to fraction form
    18,387.68/27,584.01 = 5,903.55/x
  3. Step 3: Cross multiply
    18,387.68x = 27,584.01 × 5,903.55
  4. Step 4: Simplify right side
    18,387.68x = 162,843,582.24
  5. Step 5: Solve for x
    x = 162,843,582.24/18,387.68
  6. Step 6: Final answer
    x = 8,856.13

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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.