Home / 31,205.93-46,805.85-12,480.75

Finding the Fourth Proportional to 31,205.93, 46,805.85 and 12,480.75

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Solution

The fourth proportional to 31,205.93, 46,805.85 and 12,480.75 is: 18,719.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,205.93 : 46,805.85 = 12,480.75 : x
  2. Step 2: Convert to fraction form
    31,205.93/46,805.85 = 12,480.75/x
  3. Step 3: Cross multiply
    31,205.93x = 46,805.85 × 12,480.75
  4. Step 4: Simplify right side
    31,205.93x = 584,172,112.39
  5. Step 5: Solve for x
    x = 584,172,112.39/31,205.93
  6. Step 6: Final answer
    x = 18,719.91

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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.