Home / 31,098.75-46,647.99-7,725.21

Finding the Fourth Proportional to 31,098.75, 46,647.99 and 7,725.21

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Solution

The fourth proportional to 31,098.75, 46,647.99 and 7,725.21 is: 11,587.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,098.75 : 46,647.99 = 7,725.21 : x
  2. Step 2: Convert to fraction form
    31,098.75/46,647.99 = 7,725.21/x
  3. Step 3: Cross multiply
    31,098.75x = 46,647.99 × 7,725.21
  4. Step 4: Simplify right side
    31,098.75x = 360,365,518.83
  5. Step 5: Solve for x
    x = 360,365,518.83/31,098.75
  6. Step 6: Final answer
    x = 11,587.78

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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.