Home / 21,149.96-31,739.30-11,296.31

Finding the Fourth Proportional to 21,149.96, 31,739.30 and 11,296.31

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Solution

The fourth proportional to 21,149.96, 31,739.30 and 11,296.31 is: 16,952.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.96 : 31,739.30 = 11,296.31 : x
  2. Step 2: Convert to fraction form
    21,149.96/31,739.30 = 11,296.31/x
  3. Step 3: Cross multiply
    21,149.96x = 31,739.30 × 11,296.31
  4. Step 4: Simplify right side
    21,149.96x = 358,536,971.98
  5. Step 5: Solve for x
    x = 358,536,971.98/21,149.96
  6. Step 6: Final answer
    x = 16,952.13

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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.