Home / 21,779.66-30,044.84-12,826.74

Finding the Fourth Proportional to 21,779.66, 30,044.84 and 12,826.74

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Solution

The fourth proportional to 21,779.66, 30,044.84 and 12,826.74 is: 17,694.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,779.66 : 30,044.84 = 12,826.74 : x
  2. Step 2: Convert to fraction form
    21,779.66/30,044.84 = 12,826.74/x
  3. Step 3: Cross multiply
    21,779.66x = 30,044.84 × 12,826.74
  4. Step 4: Simplify right side
    21,779.66x = 385,377,351.02
  5. Step 5: Solve for x
    x = 385,377,351.02/21,779.66
  6. Step 6: Final answer
    x = 17,694.37

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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.