Home / 20,238.08-30,358.20-6,386

Finding the Fourth Proportional to 20,238.08, 30,358.20 and 6,386

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Solution

The fourth proportional to 20,238.08, 30,358.20 and 6,386 is: 9,579.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,238.08 : 30,358.20 = 6,386 : x
  2. Step 2: Convert to fraction form
    20,238.08/30,358.20 = 6,386/x
  3. Step 3: Cross multiply
    20,238.08x = 30,358.20 × 6,386
  4. Step 4: Simplify right side
    20,238.08x = 193,867,465.20
  5. Step 5: Solve for x
    x = 193,867,465.20/20,238.08
  6. Step 6: Final answer
    x = 9,579.34

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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.