Home / 11,419.13-15,759-6,942.15

Finding the Fourth Proportional to 11,419.13, 15,759 and 6,942.15

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Solution

The fourth proportional to 11,419.13, 15,759 and 6,942.15 is: 9,580.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,419.13 : 15,759 = 6,942.15 : x
  2. Step 2: Convert to fraction form
    11,419.13/15,759 = 6,942.15/x
  3. Step 3: Cross multiply
    11,419.13x = 15,759 × 6,942.15
  4. Step 4: Simplify right side
    11,419.13x = 109,401,341.85
  5. Step 5: Solve for x
    x = 109,401,341.85/11,419.13
  6. Step 6: Final answer
    x = 9,580.54

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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.