Home / 21,342.05-29,455.00-11,911.22

Finding the Fourth Proportional to 21,342.05, 29,455.00 and 11,911.22

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Solution

The fourth proportional to 21,342.05, 29,455.00 and 11,911.22 is: 16,439.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,342.05 : 29,455.00 = 11,911.22 : x
  2. Step 2: Convert to fraction form
    21,342.05/29,455.00 = 11,911.22/x
  3. Step 3: Cross multiply
    21,342.05x = 29,455.00 × 11,911.22
  4. Step 4: Simplify right side
    21,342.05x = 350,844,918.50
  5. Step 5: Solve for x
    x = 350,844,918.50/21,342.05
  6. Step 6: Final answer
    x = 16,439.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.