Home / 10,921.11-15,066.86-6,722.07

Finding the Fourth Proportional to 10,921.11, 15,066.86 and 6,722.07

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Solution

The fourth proportional to 10,921.11, 15,066.86 and 6,722.07 is: 9,273.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.11 : 15,066.86 = 6,722.07 : x
  2. Step 2: Convert to fraction form
    10,921.11/15,066.86 = 6,722.07/x
  3. Step 3: Cross multiply
    10,921.11x = 15,066.86 × 6,722.07
  4. Step 4: Simplify right side
    10,921.11x = 101,280,453.99
  5. Step 5: Solve for x
    x = 101,280,453.99/10,921.11
  6. Step 6: Final answer
    x = 9,273.82

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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.