Home / 20,420.58-30,627.89-6,377.34

Finding the Fourth Proportional to 20,420.58, 30,627.89 and 6,377.34

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Solution

The fourth proportional to 20,420.58, 30,627.89 and 6,377.34 is: 9,565.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,420.58 : 30,627.89 = 6,377.34 : x
  2. Step 2: Convert to fraction form
    20,420.58/30,627.89 = 6,377.34/x
  3. Step 3: Cross multiply
    20,420.58x = 30,627.89 × 6,377.34
  4. Step 4: Simplify right side
    20,420.58x = 195,324,468.01
  5. Step 5: Solve for x
    x = 195,324,468.01/20,420.58
  6. Step 6: Final answer
    x = 9,565.08

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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.