Home / 10,944.25-15,069.95-9,172.78

Finding the Fourth Proportional to 10,944.25, 15,069.95 and 9,172.78

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Solution

The fourth proportional to 10,944.25, 15,069.95 and 9,172.78 is: 12,630.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,944.25 : 15,069.95 = 9,172.78 : x
  2. Step 2: Convert to fraction form
    10,944.25/15,069.95 = 9,172.78/x
  3. Step 3: Cross multiply
    10,944.25x = 15,069.95 × 9,172.78
  4. Step 4: Simplify right side
    10,944.25x = 138,233,286.82
  5. Step 5: Solve for x
    x = 138,233,286.82/10,944.25
  6. Step 6: Final answer
    x = 12,630.68

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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.