Home / 31,945.20-47,923.53-13,215.03

Finding the Fourth Proportional to 31,945.20, 47,923.53 and 13,215.03

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Solution

The fourth proportional to 31,945.20, 47,923.53 and 13,215.03 is: 19,824.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,945.20 : 47,923.53 = 13,215.03 : x
  2. Step 2: Convert to fraction form
    31,945.20/47,923.53 = 13,215.03/x
  3. Step 3: Cross multiply
    31,945.20x = 47,923.53 × 13,215.03
  4. Step 4: Simplify right side
    31,945.20x = 633,310,886.66
  5. Step 5: Solve for x
    x = 633,310,886.66/31,945.20
  6. Step 6: Final answer
    x = 19,824.92

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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.