Home / 21,211.22-29,271.30-11,779.13

Finding the Fourth Proportional to 21,211.22, 29,271.30 and 11,779.13

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Solution

The fourth proportional to 21,211.22, 29,271.30 and 11,779.13 is: 16,255.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.22 : 29,271.30 = 11,779.13 : x
  2. Step 2: Convert to fraction form
    21,211.22/29,271.30 = 11,779.13/x
  3. Step 3: Cross multiply
    21,211.22x = 29,271.30 × 11,779.13
  4. Step 4: Simplify right side
    21,211.22x = 344,790,447.97
  5. Step 5: Solve for x
    x = 344,790,447.97/21,211.22
  6. Step 6: Final answer
    x = 16,255.10

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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.