Home / 21,296.88-31,919.40-9,606.96

Finding the Fourth Proportional to 21,296.88, 31,919.40 and 9,606.96

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Solution

The fourth proportional to 21,296.88, 31,919.40 and 9,606.96 is: 14,398.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,296.88 : 31,919.40 = 9,606.96 : x
  2. Step 2: Convert to fraction form
    21,296.88/31,919.40 = 9,606.96/x
  3. Step 3: Cross multiply
    21,296.88x = 31,919.40 × 9,606.96
  4. Step 4: Simplify right side
    21,296.88x = 306,648,399.02
  5. Step 5: Solve for x
    x = 306,648,399.02/21,296.88
  6. Step 6: Final answer
    x = 14,398.75

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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.