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Finding the Fourth Proportional to 18,358.66, 27,538.61 and 11,259.42

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Solution

The fourth proportional to 18,358.66, 27,538.61 and 11,259.42 is: 16,889.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,358.66 : 27,538.61 = 11,259.42 : x
  2. Step 2: Convert to fraction form
    18,358.66/27,538.61 = 11,259.42/x
  3. Step 3: Cross multiply
    18,358.66x = 27,538.61 × 11,259.42
  4. Step 4: Simplify right side
    18,358.66x = 310,068,776.21
  5. Step 5: Solve for x
    x = 310,068,776.21/18,358.66
  6. Step 6: Final answer
    x = 16,889.51

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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.