Home / 11,120.13-15,321.15-7,336.62

Finding the Fourth Proportional to 11,120.13, 15,321.15 and 7,336.62

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Solution

The fourth proportional to 11,120.13, 15,321.15 and 7,336.62 is: 10,108.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,120.13 : 15,321.15 = 7,336.62 : x
  2. Step 2: Convert to fraction form
    11,120.13/15,321.15 = 7,336.62/x
  3. Step 3: Cross multiply
    11,120.13x = 15,321.15 × 7,336.62
  4. Step 4: Simplify right side
    11,120.13x = 112,405,455.51
  5. Step 5: Solve for x
    x = 112,405,455.51/11,120.13
  6. Step 6: Final answer
    x = 10,108.29

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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.