Home / 11,378.89-17,054.92-5,131.58

Finding the Fourth Proportional to 11,378.89, 17,054.92 and 5,131.58

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Solution

The fourth proportional to 11,378.89, 17,054.92 and 5,131.58 is: 7,691.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,378.89 : 17,054.92 = 5,131.58 : x
  2. Step 2: Convert to fraction form
    11,378.89/17,054.92 = 5,131.58/x
  3. Step 3: Cross multiply
    11,378.89x = 17,054.92 × 5,131.58
  4. Step 4: Simplify right side
    11,378.89x = 87,518,686.37
  5. Step 5: Solve for x
    x = 87,518,686.37/11,378.89
  6. Step 6: Final answer
    x = 7,691.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.