Home / 18,860.80-28,285.32-6,851.44

Finding the Fourth Proportional to 18,860.80, 28,285.32 and 6,851.44

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Solution

The fourth proportional to 18,860.80, 28,285.32 and 6,851.44 is: 10,275.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,860.80 : 28,285.32 = 6,851.44 : x
  2. Step 2: Convert to fraction form
    18,860.80/28,285.32 = 6,851.44/x
  3. Step 3: Cross multiply
    18,860.80x = 28,285.32 × 6,851.44
  4. Step 4: Simplify right side
    18,860.80x = 193,795,172.86
  5. Step 5: Solve for x
    x = 193,795,172.86/18,860.80
  6. Step 6: Final answer
    x = 10,275.02

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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.