Home / 20,557.13-30,843.68-8,074.94

Finding the Fourth Proportional to 20,557.13, 30,843.68 and 8,074.94

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Solution

The fourth proportional to 20,557.13, 30,843.68 and 8,074.94 is: 12,115.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.13 : 30,843.68 = 8,074.94 : x
  2. Step 2: Convert to fraction form
    20,557.13/30,843.68 = 8,074.94/x
  3. Step 3: Cross multiply
    20,557.13x = 30,843.68 × 8,074.94
  4. Step 4: Simplify right side
    20,557.13x = 249,060,670.79
  5. Step 5: Solve for x
    x = 249,060,670.79/20,557.13
  6. Step 6: Final answer
    x = 12,115.54

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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.