Home / 21,228.12-29,295.10-11,668.89

Finding the Fourth Proportional to 21,228.12, 29,295.10 and 11,668.89

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Solution

The fourth proportional to 21,228.12, 29,295.10 and 11,668.89 is: 16,103.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,228.12 : 29,295.10 = 11,668.89 : x
  2. Step 2: Convert to fraction form
    21,228.12/29,295.10 = 11,668.89/x
  3. Step 3: Cross multiply
    21,228.12x = 29,295.10 × 11,668.89
  4. Step 4: Simplify right side
    21,228.12x = 341,841,299.44
  5. Step 5: Solve for x
    x = 341,841,299.44/21,228.12
  6. Step 6: Final answer
    x = 16,103.23

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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.