Home / 18,753.04-28,137.32-8,217.62

Finding the Fourth Proportional to 18,753.04, 28,137.32 and 8,217.62

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Solution

The fourth proportional to 18,753.04, 28,137.32 and 8,217.62 is: 12,329.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,753.04 : 28,137.32 = 8,217.62 : x
  2. Step 2: Convert to fraction form
    18,753.04/28,137.32 = 8,217.62/x
  3. Step 3: Cross multiply
    18,753.04x = 28,137.32 × 8,217.62
  4. Step 4: Simplify right side
    18,753.04x = 231,221,803.58
  5. Step 5: Solve for x
    x = 231,221,803.58/18,753.04
  6. Step 6: Final answer
    x = 12,329.83

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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.