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Finding the Fourth Proportional to 10,671.58, 15,986.04 and 7,331.68

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Solution

The fourth proportional to 10,671.58, 15,986.04 and 7,331.68 is: 10,982.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,671.58 : 15,986.04 = 7,331.68 : x
  2. Step 2: Convert to fraction form
    10,671.58/15,986.04 = 7,331.68/x
  3. Step 3: Cross multiply
    10,671.58x = 15,986.04 × 7,331.68
  4. Step 4: Simplify right side
    10,671.58x = 117,204,529.75
  5. Step 5: Solve for x
    x = 117,204,529.75/10,671.58
  6. Step 6: Final answer
    x = 10,982.87

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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.