Home / 31,185.82-46,747.21-13,428.06

Finding the Fourth Proportional to 31,185.82, 46,747.21 and 13,428.06

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Solution

The fourth proportional to 31,185.82, 46,747.21 and 13,428.06 is: 20,128.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,185.82 : 46,747.21 = 13,428.06 : x
  2. Step 2: Convert to fraction form
    31,185.82/46,747.21 = 13,428.06/x
  3. Step 3: Cross multiply
    31,185.82x = 46,747.21 × 13,428.06
  4. Step 4: Simplify right side
    31,185.82x = 627,724,340.71
  5. Step 5: Solve for x
    x = 627,724,340.71/31,185.82
  6. Step 6: Final answer
    x = 20,128.52

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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.