Home / 31,186.32-46,747.96-13,428.56

Finding the Fourth Proportional to 31,186.32, 46,747.96 and 13,428.56

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Solution

The fourth proportional to 31,186.32, 46,747.96 and 13,428.56 is: 20,129.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,186.32 : 46,747.96 = 13,428.56 : x
  2. Step 2: Convert to fraction form
    31,186.32/46,747.96 = 13,428.56/x
  3. Step 3: Cross multiply
    31,186.32x = 46,747.96 × 13,428.56
  4. Step 4: Simplify right side
    31,186.32x = 627,757,785.74
  5. Step 5: Solve for x
    x = 627,757,785.74/31,186.32
  6. Step 6: Final answer
    x = 20,129.27

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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.