Home / 21,211.98-29,272.11-11,780.22

Finding the Fourth Proportional to 21,211.98, 29,272.11 and 11,780.22

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Solution

The fourth proportional to 21,211.98, 29,272.11 and 11,780.22 is: 16,256.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.98 : 29,272.11 = 11,780.22 : x
  2. Step 2: Convert to fraction form
    21,211.98/29,272.11 = 11,780.22/x
  3. Step 3: Cross multiply
    21,211.98x = 29,272.11 × 11,780.22
  4. Step 4: Simplify right side
    21,211.98x = 344,831,895.66
  5. Step 5: Solve for x
    x = 344,831,895.66/21,211.98
  6. Step 6: Final answer
    x = 16,256.47

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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.