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Finding the Fourth Proportional to 10,631.04, 14,671.20 and 5,915.64

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Solution

The fourth proportional to 10,631.04, 14,671.20 and 5,915.64 is: 8,163.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,631.04 : 14,671.20 = 5,915.64 : x
  2. Step 2: Convert to fraction form
    10,631.04/14,671.20 = 5,915.64/x
  3. Step 3: Cross multiply
    10,631.04x = 14,671.20 × 5,915.64
  4. Step 4: Simplify right side
    10,631.04x = 86,789,537.57
  5. Step 5: Solve for x
    x = 86,789,537.57/10,631.04
  6. Step 6: Final answer
    x = 8,163.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.