Home / 20,358.91-28,085.44-16,779.52

Finding the Fourth Proportional to 20,358.91, 28,085.44 and 16,779.52

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Solution

The fourth proportional to 20,358.91, 28,085.44 and 16,779.52 is: 23,147.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,358.91 : 28,085.44 = 16,779.52 : x
  2. Step 2: Convert to fraction form
    20,358.91/28,085.44 = 16,779.52/x
  3. Step 3: Cross multiply
    20,358.91x = 28,085.44 × 16,779.52
  4. Step 4: Simplify right side
    20,358.91x = 471,260,202.19
  5. Step 5: Solve for x
    x = 471,260,202.19/20,358.91
  6. Step 6: Final answer
    x = 23,147.61

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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.