Home / 18,880.02-28,310.76-7,792.20

Finding the Fourth Proportional to 18,880.02, 28,310.76 and 7,792.20

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Solution

The fourth proportional to 18,880.02, 28,310.76 and 7,792.20 is: 11,684.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,880.02 : 28,310.76 = 7,792.20 : x
  2. Step 2: Convert to fraction form
    18,880.02/28,310.76 = 7,792.20/x
  3. Step 3: Cross multiply
    18,880.02x = 28,310.76 × 7,792.20
  4. Step 4: Simplify right side
    18,880.02x = 220,603,104.07
  5. Step 5: Solve for x
    x = 220,603,104.07/18,880.02
  6. Step 6: Final answer
    x = 11,684.47

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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.