Home / 21,406.24-29,542.56-11,977.84

Finding the Fourth Proportional to 21,406.24, 29,542.56 and 11,977.84

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Solution

The fourth proportional to 21,406.24, 29,542.56 and 11,977.84 is: 16,530.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,406.24 : 29,542.56 = 11,977.84 : x
  2. Step 2: Convert to fraction form
    21,406.24/29,542.56 = 11,977.84/x
  3. Step 3: Cross multiply
    21,406.24x = 29,542.56 × 11,977.84
  4. Step 4: Simplify right side
    21,406.24x = 353,856,056.87
  5. Step 5: Solve for x
    x = 353,856,056.87/21,406.24
  6. Step 6: Final answer
    x = 16,530.51

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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.