Home / 21,307.22-29,404.11-11,876.39

Finding the Fourth Proportional to 21,307.22, 29,404.11 and 11,876.39

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Solution

The fourth proportional to 21,307.22, 29,404.11 and 11,876.39 is: 16,389.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.22 : 29,404.11 = 11,876.39 : x
  2. Step 2: Convert to fraction form
    21,307.22/29,404.11 = 11,876.39/x
  3. Step 3: Cross multiply
    21,307.22x = 29,404.11 × 11,876.39
  4. Step 4: Simplify right side
    21,307.22x = 349,214,530.94
  5. Step 5: Solve for x
    x = 349,214,530.94/21,307.22
  6. Step 6: Final answer
    x = 16,389.50

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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.