Home / 18,767.70-28,143.25-5,617.55

Finding the Fourth Proportional to 18,767.70, 28,143.25 and 5,617.55

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Solution

The fourth proportional to 18,767.70, 28,143.25 and 5,617.55 is: 8,423.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,767.70 : 28,143.25 = 5,617.55 : x
  2. Step 2: Convert to fraction form
    18,767.70/28,143.25 = 5,617.55/x
  3. Step 3: Cross multiply
    18,767.70x = 28,143.25 × 5,617.55
  4. Step 4: Simplify right side
    18,767.70x = 158,096,170.35
  5. Step 5: Solve for x
    x = 158,096,170.35/18,767.70
  6. Step 6: Final answer
    x = 8,423.84

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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.