Home / 10,902.14-15,040.36-6,861.81

Finding the Fourth Proportional to 10,902.14, 15,040.36 and 6,861.81

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Solution

The fourth proportional to 10,902.14, 15,040.36 and 6,861.81 is: 9,466.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,902.14 : 15,040.36 = 6,861.81 : x
  2. Step 2: Convert to fraction form
    10,902.14/15,040.36 = 6,861.81/x
  3. Step 3: Cross multiply
    10,902.14x = 15,040.36 × 6,861.81
  4. Step 4: Simplify right side
    10,902.14x = 103,204,138.33
  5. Step 5: Solve for x
    x = 103,204,138.33/10,902.14
  6. Step 6: Final answer
    x = 9,466.41

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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.