Home / 18,892.16-28,341.68-7,792.80

Finding the Fourth Proportional to 18,892.16, 28,341.68 and 7,792.80

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Solution

The fourth proportional to 18,892.16, 28,341.68 and 7,792.80 is: 11,690.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,892.16 : 28,341.68 = 7,792.80 : x
  2. Step 2: Convert to fraction form
    18,892.16/28,341.68 = 7,792.80/x
  3. Step 3: Cross multiply
    18,892.16x = 28,341.68 × 7,792.80
  4. Step 4: Simplify right side
    18,892.16x = 220,861,043.90
  5. Step 5: Solve for x
    x = 220,861,043.90/18,892.16
  6. Step 6: Final answer
    x = 11,690.62

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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.