Home / 20,369.21-30,543.39-8,519.77

Finding the Fourth Proportional to 20,369.21, 30,543.39 and 8,519.77

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Solution

The fourth proportional to 20,369.21, 30,543.39 and 8,519.77 is: 12,775.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,369.21 : 30,543.39 = 8,519.77 : x
  2. Step 2: Convert to fraction form
    20,369.21/30,543.39 = 8,519.77/x
  3. Step 3: Cross multiply
    20,369.21x = 30,543.39 × 8,519.77
  4. Step 4: Simplify right side
    20,369.21x = 260,222,696.00
  5. Step 5: Solve for x
    x = 260,222,696.00/20,369.21
  6. Step 6: Final answer
    x = 12,775.30

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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.