Home / 10,977.75-15,122.57-8,322.57

Finding the Fourth Proportional to 10,977.75, 15,122.57 and 8,322.57

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Solution

The fourth proportional to 10,977.75, 15,122.57 and 8,322.57 is: 11,464.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,977.75 : 15,122.57 = 8,322.57 : x
  2. Step 2: Convert to fraction form
    10,977.75/15,122.57 = 8,322.57/x
  3. Step 3: Cross multiply
    10,977.75x = 15,122.57 × 8,322.57
  4. Step 4: Simplify right side
    10,977.75x = 125,858,605.79
  5. Step 5: Solve for x
    x = 125,858,605.79/10,977.75
  6. Step 6: Final answer
    x = 11,464.88

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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.