Home / 31,954.20-47,931.30-13,231.68

Finding the Fourth Proportional to 31,954.20, 47,931.30 and 13,231.68

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Solution

The fourth proportional to 31,954.20, 47,931.30 and 13,231.68 is: 19,847.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,954.20 : 47,931.30 = 13,231.68 : x
  2. Step 2: Convert to fraction form
    31,954.20/47,931.30 = 13,231.68/x
  3. Step 3: Cross multiply
    31,954.20x = 47,931.30 × 13,231.68
  4. Step 4: Simplify right side
    31,954.20x = 634,211,623.58
  5. Step 5: Solve for x
    x = 634,211,623.58/31,954.20
  6. Step 6: Final answer
    x = 19,847.52

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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.