Home / 21,245.28-29,318.22-11,813.64

Finding the Fourth Proportional to 21,245.28, 29,318.22 and 11,813.64

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Solution

The fourth proportional to 21,245.28, 29,318.22 and 11,813.64 is: 16,302.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.28 : 29,318.22 = 11,813.64 : x
  2. Step 2: Convert to fraction form
    21,245.28/29,318.22 = 11,813.64/x
  3. Step 3: Cross multiply
    21,245.28x = 29,318.22 × 11,813.64
  4. Step 4: Simplify right side
    21,245.28x = 346,354,896.52
  5. Step 5: Solve for x
    x = 346,354,896.52/21,245.28
  6. Step 6: Final answer
    x = 16,302.68

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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.