Home / 20,465.44-30,703.27-7,138.62

Finding the Fourth Proportional to 20,465.44, 30,703.27 and 7,138.62

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Solution

The fourth proportional to 20,465.44, 30,703.27 and 7,138.62 is: 10,709.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,465.44 : 30,703.27 = 7,138.62 : x
  2. Step 2: Convert to fraction form
    20,465.44/30,703.27 = 7,138.62/x
  3. Step 3: Cross multiply
    20,465.44x = 30,703.27 × 7,138.62
  4. Step 4: Simplify right side
    20,465.44x = 219,178,959.44
  5. Step 5: Solve for x
    x = 219,178,959.44/20,465.44
  6. Step 6: Final answer
    x = 10,709.71

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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.