Home / 21,149.00-31,720.05-7,998.24

Finding the Fourth Proportional to 21,149.00, 31,720.05 and 7,998.24

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Solution

The fourth proportional to 21,149.00, 31,720.05 and 7,998.24 is: 11,996.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.00 : 31,720.05 = 7,998.24 : x
  2. Step 2: Convert to fraction form
    21,149.00/31,720.05 = 7,998.24/x
  3. Step 3: Cross multiply
    21,149.00x = 31,720.05 × 7,998.24
  4. Step 4: Simplify right side
    21,149.00x = 253,704,572.71
  5. Step 5: Solve for x
    x = 253,704,572.71/21,149.00
  6. Step 6: Final answer
    x = 11,996.06

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Double scale
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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.