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Finding the Fourth Proportional to 11,916.64, 17,865.63 and 7,524.88

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Solution

The fourth proportional to 11,916.64, 17,865.63 and 7,524.88 is: 11,281.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,916.64 : 17,865.63 = 7,524.88 : x
  2. Step 2: Convert to fraction form
    11,916.64/17,865.63 = 7,524.88/x
  3. Step 3: Cross multiply
    11,916.64x = 17,865.63 × 7,524.88
  4. Step 4: Simplify right side
    11,916.64x = 134,436,721.87
  5. Step 5: Solve for x
    x = 134,436,721.87/11,916.64
  6. Step 6: Final answer
    x = 11,281.43

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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.