Home / 10,944.48-15,131.20-8,434.88

Finding the Fourth Proportional to 10,944.48, 15,131.20 and 8,434.88

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Solution

The fourth proportional to 10,944.48, 15,131.20 and 8,434.88 is: 11,661.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,944.48 : 15,131.20 = 8,434.88 : x
  2. Step 2: Convert to fraction form
    10,944.48/15,131.20 = 8,434.88/x
  3. Step 3: Cross multiply
    10,944.48x = 15,131.20 × 8,434.88
  4. Step 4: Simplify right side
    10,944.48x = 127,629,856.26
  5. Step 5: Solve for x
    x = 127,629,856.26/10,944.48
  6. Step 6: Final answer
    x = 11,661.57

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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.