Home / 21,313.11-29,412.46-11,754.09

Finding the Fourth Proportional to 21,313.11, 29,412.46 and 11,754.09

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Solution

The fourth proportional to 21,313.11, 29,412.46 and 11,754.09 is: 16,220.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.11 : 29,412.46 = 11,754.09 : x
  2. Step 2: Convert to fraction form
    21,313.11/29,412.46 = 11,754.09/x
  3. Step 3: Cross multiply
    21,313.11x = 29,412.46 × 11,754.09
  4. Step 4: Simplify right side
    21,313.11x = 345,716,746.11
  5. Step 5: Solve for x
    x = 345,716,746.11/21,313.11
  6. Step 6: Final answer
    x = 16,220.85

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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.