Home / 31,719.86-47,575.65-11,995.85

Finding the Fourth Proportional to 31,719.86, 47,575.65 and 11,995.85

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Solution

The fourth proportional to 31,719.86, 47,575.65 and 11,995.85 is: 17,992.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,719.86 : 47,575.65 = 11,995.85 : x
  2. Step 2: Convert to fraction form
    31,719.86/47,575.65 = 11,995.85/x
  3. Step 3: Cross multiply
    31,719.86x = 47,575.65 × 11,995.85
  4. Step 4: Simplify right side
    31,719.86x = 570,710,361.05
  5. Step 5: Solve for x
    x = 570,710,361.05/31,719.86
  6. Step 6: Final answer
    x = 17,992.21

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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.