Home / 31,182.74-46,778.32-10,115.90

Finding the Fourth Proportional to 31,182.74, 46,778.32 and 10,115.90

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Solution

The fourth proportional to 31,182.74, 46,778.32 and 10,115.90 is: 15,175.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,182.74 : 46,778.32 = 10,115.90 : x
  2. Step 2: Convert to fraction form
    31,182.74/46,778.32 = 10,115.90/x
  3. Step 3: Cross multiply
    31,182.74x = 46,778.32 × 10,115.90
  4. Step 4: Simplify right side
    31,182.74x = 473,204,807.29
  5. Step 5: Solve for x
    x = 473,204,807.29/31,182.74
  6. Step 6: Final answer
    x = 15,175.22

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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.