Home / 21,142.26-29,176.25-11,710.82

Finding the Fourth Proportional to 21,142.26, 29,176.25 and 11,710.82

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Solution

The fourth proportional to 21,142.26, 29,176.25 and 11,710.82 is: 16,160.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,142.26 : 29,176.25 = 11,710.82 : x
  2. Step 2: Convert to fraction form
    21,142.26/29,176.25 = 11,710.82/x
  3. Step 3: Cross multiply
    21,142.26x = 29,176.25 × 11,710.82
  4. Step 4: Simplify right side
    21,142.26x = 341,677,812.03
  5. Step 5: Solve for x
    x = 341,677,812.03/21,142.26
  6. Step 6: Final answer
    x = 16,160.89

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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.