Home / 11,156.15-15,394.34-6,679.78

Finding the Fourth Proportional to 11,156.15, 15,394.34 and 6,679.78

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Solution

The fourth proportional to 11,156.15, 15,394.34 and 6,679.78 is: 9,217.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.15 : 15,394.34 = 6,679.78 : x
  2. Step 2: Convert to fraction form
    11,156.15/15,394.34 = 6,679.78/x
  3. Step 3: Cross multiply
    11,156.15x = 15,394.34 × 6,679.78
  4. Step 4: Simplify right side
    11,156.15x = 102,830,694.07
  5. Step 5: Solve for x
    x = 102,830,694.07/11,156.15
  6. Step 6: Final answer
    x = 9,217.40

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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.