Home / 11,167.57-15,409.56-6,690.34

Finding the Fourth Proportional to 11,167.57, 15,409.56 and 6,690.34

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Solution

The fourth proportional to 11,167.57, 15,409.56 and 6,690.34 is: 9,231.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,167.57 : 15,409.56 = 6,690.34 : x
  2. Step 2: Convert to fraction form
    11,167.57/15,409.56 = 6,690.34/x
  3. Step 3: Cross multiply
    11,167.57x = 15,409.56 × 6,690.34
  4. Step 4: Simplify right side
    11,167.57x = 103,095,195.65
  5. Step 5: Solve for x
    x = 103,095,195.65/11,167.57
  6. Step 6: Final answer
    x = 9,231.66

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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.