Home / 11,131.11-15,362.37-6,416.91

Finding the Fourth Proportional to 11,131.11, 15,362.37 and 6,416.91

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Solution

The fourth proportional to 11,131.11, 15,362.37 and 6,416.91 is: 8,856.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,131.11 : 15,362.37 = 6,416.91 : x
  2. Step 2: Convert to fraction form
    11,131.11/15,362.37 = 6,416.91/x
  3. Step 3: Cross multiply
    11,131.11x = 15,362.37 × 6,416.91
  4. Step 4: Simplify right side
    11,131.11x = 98,578,945.68
  5. Step 5: Solve for x
    x = 98,578,945.68/11,131.11
  6. Step 6: Final answer
    x = 8,856.16

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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.