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Finding the Fourth Proportional to 12,314.79, 18,476.12 and 4,411.97

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Solution

The fourth proportional to 12,314.79, 18,476.12 and 4,411.97 is: 6,619.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,314.79 : 18,476.12 = 4,411.97 : x
  2. Step 2: Convert to fraction form
    12,314.79/18,476.12 = 4,411.97/x
  3. Step 3: Cross multiply
    12,314.79x = 18,476.12 × 4,411.97
  4. Step 4: Simplify right side
    12,314.79x = 81,516,087.16
  5. Step 5: Solve for x
    x = 81,516,087.16/12,314.79
  6. Step 6: Final answer
    x = 6,619.36

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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.