Home / 20,145.65-30,228.81-8,308.52

Finding the Fourth Proportional to 20,145.65, 30,228.81 and 8,308.52

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Solution

The fourth proportional to 20,145.65, 30,228.81 and 8,308.52 is: 12,467.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.65 : 30,228.81 = 8,308.52 : x
  2. Step 2: Convert to fraction form
    20,145.65/30,228.81 = 8,308.52/x
  3. Step 3: Cross multiply
    20,145.65x = 30,228.81 × 8,308.52
  4. Step 4: Simplify right side
    20,145.65x = 251,156,672.46
  5. Step 5: Solve for x
    x = 251,156,672.46/20,145.65
  6. Step 6: Final answer
    x = 12,467.04

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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.