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Finding the Fourth Proportional to 18,673.22, 28,027.42 and 12,437.62

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Solution

The fourth proportional to 18,673.22, 28,027.42 and 12,437.62 is: 18,668.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,673.22 : 28,027.42 = 12,437.62 : x
  2. Step 2: Convert to fraction form
    18,673.22/28,027.42 = 12,437.62/x
  3. Step 3: Cross multiply
    18,673.22x = 28,027.42 × 12,437.62
  4. Step 4: Simplify right side
    18,673.22x = 348,594,298.38
  5. Step 5: Solve for x
    x = 348,594,298.38/18,673.22
  6. Step 6: Final answer
    x = 18,668.14

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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.