Home / 21,296.96-31,945.44-8,153.36

Finding the Fourth Proportional to 21,296.96, 31,945.44 and 8,153.36

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Solution

The fourth proportional to 21,296.96, 31,945.44 and 8,153.36 is: 12,230.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,296.96 : 31,945.44 = 8,153.36 : x
  2. Step 2: Convert to fraction form
    21,296.96/31,945.44 = 8,153.36/x
  3. Step 3: Cross multiply
    21,296.96x = 31,945.44 × 8,153.36
  4. Step 4: Simplify right side
    21,296.96x = 260,462,672.68
  5. Step 5: Solve for x
    x = 260,462,672.68/21,296.96
  6. Step 6: Final answer
    x = 12,230.04

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1.5x scale

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.