Home / 39,779.15-54,894.76-21,873.09

Finding the Fourth Proportional to 39,779.15, 54,894.76 and 21,873.09

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Solution

The fourth proportional to 39,779.15, 54,894.76 and 21,873.09 is: 30,184.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,779.15 : 54,894.76 = 21,873.09 : x
  2. Step 2: Convert to fraction form
    39,779.15/54,894.76 = 21,873.09/x
  3. Step 3: Cross multiply
    39,779.15x = 54,894.76 × 21,873.09
  4. Step 4: Simplify right side
    39,779.15x = 1,200,717,991.43
  5. Step 5: Solve for x
    x = 1,200,717,991.43/39,779.15
  6. Step 6: Final answer
    x = 30,184.61

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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.