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Finding the Fourth Proportional to 18,792.77, 28,189.84 and 6,313.20

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Solution

The fourth proportional to 18,792.77, 28,189.84 and 6,313.20 is: 9,470.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.77 : 28,189.84 = 6,313.20 : x
  2. Step 2: Convert to fraction form
    18,792.77/28,189.84 = 6,313.20/x
  3. Step 3: Cross multiply
    18,792.77x = 28,189.84 × 6,313.20
  4. Step 4: Simplify right side
    18,792.77x = 177,968,097.89
  5. Step 5: Solve for x
    x = 177,968,097.89/18,792.77
  6. Step 6: Final answer
    x = 9,470.03

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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.