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Finding the Fourth Proportional to 8,943.38, 13,468.62 and 8,145.32

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Solution

The fourth proportional to 8,943.38, 13,468.62 and 8,145.32 is: 12,266.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,943.38 : 13,468.62 = 8,145.32 : x
  2. Step 2: Convert to fraction form
    8,943.38/13,468.62 = 8,145.32/x
  3. Step 3: Cross multiply
    8,943.38x = 13,468.62 × 8,145.32
  4. Step 4: Simplify right side
    8,943.38x = 109,706,219.86
  5. Step 5: Solve for x
    x = 109,706,219.86/8,943.38
  6. Step 6: Final answer
    x = 12,266.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.