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Finding the Fourth Proportional to 9,915.39, 14,868.29 and 5,756.44

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Solution

The fourth proportional to 9,915.39, 14,868.29 and 5,756.44 is: 8,631.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.39 : 14,868.29 = 5,756.44 : x
  2. Step 2: Convert to fraction form
    9,915.39/14,868.29 = 5,756.44/x
  3. Step 3: Cross multiply
    9,915.39x = 14,868.29 × 5,756.44
  4. Step 4: Simplify right side
    9,915.39x = 85,588,433.68
  5. Step 5: Solve for x
    x = 85,588,433.68/9,915.39
  6. Step 6: Final answer
    x = 8,631.88

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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.