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Finding the Fourth Proportional to 18,295.63, 27,442.99 and 8,434.90

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Solution

The fourth proportional to 18,295.63, 27,442.99 and 8,434.90 is: 12,652.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,295.63 : 27,442.99 = 8,434.90 : x
  2. Step 2: Convert to fraction form
    18,295.63/27,442.99 = 8,434.90/x
  3. Step 3: Cross multiply
    18,295.63x = 27,442.99 × 8,434.90
  4. Step 4: Simplify right side
    18,295.63x = 231,478,876.35
  5. Step 5: Solve for x
    x = 231,478,876.35/18,295.63
  6. Step 6: Final answer
    x = 12,652.14

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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.