Home / 31,179.86-46,765.12-10,121.68

Finding the Fourth Proportional to 31,179.86, 46,765.12 and 10,121.68

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Solution

The fourth proportional to 31,179.86, 46,765.12 and 10,121.68 is: 15,181.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,179.86 : 46,765.12 = 10,121.68 : x
  2. Step 2: Convert to fraction form
    31,179.86/46,765.12 = 10,121.68/x
  3. Step 3: Cross multiply
    31,179.86x = 46,765.12 × 10,121.68
  4. Step 4: Simplify right side
    31,179.86x = 473,341,579.80
  5. Step 5: Solve for x
    x = 473,341,579.80/31,179.86
  6. Step 6: Final answer
    x = 15,181.00

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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.