Home / 20,260.08-30,391.20-6,408

Finding the Fourth Proportional to 20,260.08, 30,391.20 and 6,408

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Solution

The fourth proportional to 20,260.08, 30,391.20 and 6,408 is: 9,612.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,260.08 : 30,391.20 = 6,408 : x
  2. Step 2: Convert to fraction form
    20,260.08/30,391.20 = 6,408/x
  3. Step 3: Cross multiply
    20,260.08x = 30,391.20 × 6,408
  4. Step 4: Simplify right side
    20,260.08x = 194,746,809.60
  5. Step 5: Solve for x
    x = 194,746,809.60/20,260.08
  6. Step 6: Final answer
    x = 9,612.34

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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.