Home / 18,771.32-28,155.90-6,290.84

Finding the Fourth Proportional to 18,771.32, 28,155.90 and 6,290.84

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Solution

The fourth proportional to 18,771.32, 28,155.90 and 6,290.84 is: 9,435.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.32 : 28,155.90 = 6,290.84 : x
  2. Step 2: Convert to fraction form
    18,771.32/28,155.90 = 6,290.84/x
  3. Step 3: Cross multiply
    18,771.32x = 28,155.90 × 6,290.84
  4. Step 4: Simplify right side
    18,771.32x = 177,124,261.96
  5. Step 5: Solve for x
    x = 177,124,261.96/18,771.32
  6. Step 6: Final answer
    x = 9,435.90

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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.