Home / 21,826.40-32,779.20-19,104.80

Finding the Fourth Proportional to 21,826.40, 32,779.20 and 19,104.80

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Solution

The fourth proportional to 21,826.40, 32,779.20 and 19,104.80 is: 28,691.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,826.40 : 32,779.20 = 19,104.80 : x
  2. Step 2: Convert to fraction form
    21,826.40/32,779.20 = 19,104.80/x
  3. Step 3: Cross multiply
    21,826.40x = 32,779.20 × 19,104.80
  4. Step 4: Simplify right side
    21,826.40x = 626,240,060.16
  5. Step 5: Solve for x
    x = 626,240,060.16/21,826.40
  6. Step 6: Final answer
    x = 28,691.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.