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Finding the Fourth Proportional to 30,451.38, 45,679.89 and 8,264.94

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Solution

The fourth proportional to 30,451.38, 45,679.89 and 8,264.94 is: 12,398.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,451.38 : 45,679.89 = 8,264.94 : x
  2. Step 2: Convert to fraction form
    30,451.38/45,679.89 = 8,264.94/x
  3. Step 3: Cross multiply
    30,451.38x = 45,679.89 × 8,264.94
  4. Step 4: Simplify right side
    30,451.38x = 377,541,550.06
  5. Step 5: Solve for x
    x = 377,541,550.06/30,451.38
  6. Step 6: Final answer
    x = 12,398.18

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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.