Home / 21,103.93-29,122.50-11,672.29

Finding the Fourth Proportional to 21,103.93, 29,122.50 and 11,672.29

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Solution

The fourth proportional to 21,103.93, 29,122.50 and 11,672.29 is: 16,107.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,103.93 : 29,122.50 = 11,672.29 : x
  2. Step 2: Convert to fraction form
    21,103.93/29,122.50 = 11,672.29/x
  3. Step 3: Cross multiply
    21,103.93x = 29,122.50 × 11,672.29
  4. Step 4: Simplify right side
    21,103.93x = 339,926,265.53
  5. Step 5: Solve for x
    x = 339,926,265.53/21,103.93
  6. Step 6: Final answer
    x = 16,107.25

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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.