Home / 20,145.69-30,187.76-8,452.53

Finding the Fourth Proportional to 20,145.69, 30,187.76 and 8,452.53

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Solution

The fourth proportional to 20,145.69, 30,187.76 and 8,452.53 is: 12,665.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.69 : 30,187.76 = 8,452.53 : x
  2. Step 2: Convert to fraction form
    20,145.69/30,187.76 = 8,452.53/x
  3. Step 3: Cross multiply
    20,145.69x = 30,187.76 × 8,452.53
  4. Step 4: Simplify right side
    20,145.69x = 255,162,904.77
  5. Step 5: Solve for x
    x = 255,162,904.77/20,145.69
  6. Step 6: Final answer
    x = 12,665.88

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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.