Home / 31,939.98-47,919.21-13,216.56

Finding the Fourth Proportional to 31,939.98, 47,919.21 and 13,216.56

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Solution

The fourth proportional to 31,939.98, 47,919.21 and 13,216.56 is: 19,828.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,939.98 : 47,919.21 = 13,216.56 : x
  2. Step 2: Convert to fraction form
    31,939.98/47,919.21 = 13,216.56/x
  3. Step 3: Cross multiply
    31,939.98x = 47,919.21 × 13,216.56
  4. Step 4: Simplify right side
    31,939.98x = 633,327,114.12
  5. Step 5: Solve for x
    x = 633,327,114.12/31,939.98
  6. Step 6: Final answer
    x = 19,828.66

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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.