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Finding the Fourth Proportional to 13,324.99, 19,999.60 and 7,090.22

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Solution

The fourth proportional to 13,324.99, 19,999.60 and 7,090.22 is: 10,641.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,324.99 : 19,999.60 = 7,090.22 : x
  2. Step 2: Convert to fraction form
    13,324.99/19,999.60 = 7,090.22/x
  3. Step 3: Cross multiply
    13,324.99x = 19,999.60 × 7,090.22
  4. Step 4: Simplify right side
    13,324.99x = 141,801,563.91
  5. Step 5: Solve for x
    x = 141,801,563.91/13,324.99
  6. Step 6: Final answer
    x = 10,641.78

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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.