Home / 21,299.55-29,393.57-11,739.78

Finding the Fourth Proportional to 21,299.55, 29,393.57 and 11,739.78

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Solution

The fourth proportional to 21,299.55, 29,393.57 and 11,739.78 is: 16,201.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,299.55 : 29,393.57 = 11,739.78 : x
  2. Step 2: Convert to fraction form
    21,299.55/29,393.57 = 11,739.78/x
  3. Step 3: Cross multiply
    21,299.55x = 29,393.57 × 11,739.78
  4. Step 4: Simplify right side
    21,299.55x = 345,074,045.21
  5. Step 5: Solve for x
    x = 345,074,045.21/21,299.55
  6. Step 6: Final answer
    x = 16,201.00

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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.