Home / 28,536.25-39,379.26-15,789.10

Finding the Fourth Proportional to 28,536.25, 39,379.26 and 15,789.10

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Solution

The fourth proportional to 28,536.25, 39,379.26 and 15,789.10 is: 21,788.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,536.25 : 39,379.26 = 15,789.10 : x
  2. Step 2: Convert to fraction form
    28,536.25/39,379.26 = 15,789.10/x
  3. Step 3: Cross multiply
    28,536.25x = 39,379.26 × 15,789.10
  4. Step 4: Simplify right side
    28,536.25x = 621,763,034.83
  5. Step 5: Solve for x
    x = 621,763,034.83/28,536.25
  6. Step 6: Final answer
    x = 21,788.54

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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.