Home / 11,149.79-15,388.26-6,902.20

Finding the Fourth Proportional to 11,149.79, 15,388.26 and 6,902.20

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Solution

The fourth proportional to 11,149.79, 15,388.26 and 6,902.20 is: 9,525.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,149.79 : 15,388.26 = 6,902.20 : x
  2. Step 2: Convert to fraction form
    11,149.79/15,388.26 = 6,902.20/x
  3. Step 3: Cross multiply
    11,149.79x = 15,388.26 × 6,902.20
  4. Step 4: Simplify right side
    11,149.79x = 106,212,771.23
  5. Step 5: Solve for x
    x = 106,212,771.23/11,149.79
  6. Step 6: Final answer
    x = 9,525.99

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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.