Home / 21,099.12-31,653.72-11,236.36

Finding the Fourth Proportional to 21,099.12, 31,653.72 and 11,236.36

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Solution

The fourth proportional to 21,099.12, 31,653.72 and 11,236.36 is: 16,857.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.12 : 31,653.72 = 11,236.36 : x
  2. Step 2: Convert to fraction form
    21,099.12/31,653.72 = 11,236.36/x
  3. Step 3: Cross multiply
    21,099.12x = 31,653.72 × 11,236.36
  4. Step 4: Simplify right side
    21,099.12x = 355,672,593.26
  5. Step 5: Solve for x
    x = 355,672,593.26/21,099.12
  6. Step 6: Final answer
    x = 16,857.22

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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.