Home / 39,779.40-54,894.82-21,874.24

Finding the Fourth Proportional to 39,779.40, 54,894.82 and 21,874.24

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Solution

The fourth proportional to 39,779.40, 54,894.82 and 21,874.24 is: 30,186.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,779.40 : 54,894.82 = 21,874.24 : x
  2. Step 2: Convert to fraction form
    39,779.40/54,894.82 = 21,874.24/x
  3. Step 3: Cross multiply
    39,779.40x = 54,894.82 × 21,874.24
  4. Step 4: Simplify right side
    39,779.40x = 1,200,782,467.44
  5. Step 5: Solve for x
    x = 1,200,782,467.44/39,779.40
  6. Step 6: Final answer
    x = 30,186.04

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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.