Home / 21,333.56-29,439.24-11,900.30

Finding the Fourth Proportional to 21,333.56, 29,439.24 and 11,900.30

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Solution

The fourth proportional to 21,333.56, 29,439.24 and 11,900.30 is: 16,421.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,333.56 : 29,439.24 = 11,900.30 : x
  2. Step 2: Convert to fraction form
    21,333.56/29,439.24 = 11,900.30/x
  3. Step 3: Cross multiply
    21,333.56x = 29,439.24 × 11,900.30
  4. Step 4: Simplify right side
    21,333.56x = 350,335,861.37
  5. Step 5: Solve for x
    x = 350,335,861.37/21,333.56
  6. Step 6: Final answer
    x = 16,421.82

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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.