Home / 15,160.86-20,914.46-10,131.82

Finding the Fourth Proportional to 15,160.86, 20,914.46 and 10,131.82

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Solution

The fourth proportional to 15,160.86, 20,914.46 and 10,131.82 is: 13,976.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,160.86 : 20,914.46 = 10,131.82 : x
  2. Step 2: Convert to fraction form
    15,160.86/20,914.46 = 10,131.82/x
  3. Step 3: Cross multiply
    15,160.86x = 20,914.46 × 10,131.82
  4. Step 4: Simplify right side
    15,160.86x = 211,901,544.12
  5. Step 5: Solve for x
    x = 211,901,544.12/15,160.86
  6. Step 6: Final answer
    x = 13,976.88

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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.