Home / 18,670.10-28,004.55-6,190.70

Finding the Fourth Proportional to 18,670.10, 28,004.55 and 6,190.70

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Solution

The fourth proportional to 18,670.10, 28,004.55 and 6,190.70 is: 9,285.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,670.10 : 28,004.55 = 6,190.70 : x
  2. Step 2: Convert to fraction form
    18,670.10/28,004.55 = 6,190.70/x
  3. Step 3: Cross multiply
    18,670.10x = 28,004.55 × 6,190.70
  4. Step 4: Simplify right side
    18,670.10x = 173,367,767.69
  5. Step 5: Solve for x
    x = 173,367,767.69/18,670.10
  6. Step 6: Final answer
    x = 9,285.85

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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.