Home / 21,211.14-29,272.68-11,779.71

Finding the Fourth Proportional to 21,211.14, 29,272.68 and 11,779.71

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Solution

The fourth proportional to 21,211.14, 29,272.68 and 11,779.71 is: 16,256.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.14 : 29,272.68 = 11,779.71 : x
  2. Step 2: Convert to fraction form
    21,211.14/29,272.68 = 11,779.71/x
  3. Step 3: Cross multiply
    21,211.14x = 29,272.68 × 11,779.71
  4. Step 4: Simplify right side
    21,211.14x = 344,823,571.55
  5. Step 5: Solve for x
    x = 344,823,571.55/21,211.14
  6. Step 6: Final answer
    x = 16,256.72

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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.