Home / 20,258.08-30,388.20-6,406

Finding the Fourth Proportional to 20,258.08, 30,388.20 and 6,406

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Solution

The fourth proportional to 20,258.08, 30,388.20 and 6,406 is: 9,609.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,258.08 : 30,388.20 = 6,406 : x
  2. Step 2: Convert to fraction form
    20,258.08/30,388.20 = 6,406/x
  3. Step 3: Cross multiply
    20,258.08x = 30,388.20 × 6,406
  4. Step 4: Simplify right side
    20,258.08x = 194,666,809.20
  5. Step 5: Solve for x
    x = 194,666,809.20/20,258.08
  6. Step 6: Final answer
    x = 9,609.34

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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.