Home / 21,307.22-29,404.10-11,876.38

Finding the Fourth Proportional to 21,307.22, 29,404.10 and 11,876.38

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Solution

The fourth proportional to 21,307.22, 29,404.10 and 11,876.38 is: 16,389.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.22 : 29,404.10 = 11,876.38 : x
  2. Step 2: Convert to fraction form
    21,307.22/29,404.10 = 11,876.38/x
  3. Step 3: Cross multiply
    21,307.22x = 29,404.10 × 11,876.38
  4. Step 4: Simplify right side
    21,307.22x = 349,214,265.16
  5. Step 5: Solve for x
    x = 349,214,265.16/21,307.22
  6. Step 6: Final answer
    x = 16,389.48

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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.