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Finding the Fourth Proportional to 11,672.40, 17,508.60 and 4,274.40

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Solution

The fourth proportional to 11,672.40, 17,508.60 and 4,274.40 is: 6,411.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,672.40 : 17,508.60 = 4,274.40 : x
  2. Step 2: Convert to fraction form
    11,672.40/17,508.60 = 4,274.40/x
  3. Step 3: Cross multiply
    11,672.40x = 17,508.60 × 4,274.40
  4. Step 4: Simplify right side
    11,672.40x = 74,838,759.84
  5. Step 5: Solve for x
    x = 74,838,759.84/11,672.40
  6. Step 6: Final answer
    x = 6,411.60

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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.