Home / 11,085.68-15,295.56-6,890.96

Finding the Fourth Proportional to 11,085.68, 15,295.56 and 6,890.96

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Solution

The fourth proportional to 11,085.68, 15,295.56 and 6,890.96 is: 9,507.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,085.68 : 15,295.56 = 6,890.96 : x
  2. Step 2: Convert to fraction form
    11,085.68/15,295.56 = 6,890.96/x
  3. Step 3: Cross multiply
    11,085.68x = 15,295.56 × 6,890.96
  4. Step 4: Simplify right side
    11,085.68x = 105,401,092.14
  5. Step 5: Solve for x
    x = 105,401,092.14/11,085.68
  6. Step 6: Final answer
    x = 9,507.86

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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.