Home / 21,779.50-30,059.67-12,348.22

Finding the Fourth Proportional to 21,779.50, 30,059.67 and 12,348.22

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Solution

The fourth proportional to 21,779.50, 30,059.67 and 12,348.22 is: 17,042.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,779.50 : 30,059.67 = 12,348.22 : x
  2. Step 2: Convert to fraction form
    21,779.50/30,059.67 = 12,348.22/x
  3. Step 3: Cross multiply
    21,779.50x = 30,059.67 × 12,348.22
  4. Step 4: Simplify right side
    21,779.50x = 371,183,418.29
  5. Step 5: Solve for x
    x = 371,183,418.29/21,779.50
  6. Step 6: Final answer
    x = 17,042.79

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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.