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Finding the Fourth Proportional to 10,965.87, 15,132.87 and 5,930.06

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Solution

The fourth proportional to 10,965.87, 15,132.87 and 5,930.06 is: 8,183.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,965.87 : 15,132.87 = 5,930.06 : x
  2. Step 2: Convert to fraction form
    10,965.87/15,132.87 = 5,930.06/x
  3. Step 3: Cross multiply
    10,965.87x = 15,132.87 × 5,930.06
  4. Step 4: Simplify right side
    10,965.87x = 89,738,751.41
  5. Step 5: Solve for x
    x = 89,738,751.41/10,965.87
  6. Step 6: Final answer
    x = 8,183.46

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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.