Home / 12,078.62-18,145.68-8,528.90

Finding the Fourth Proportional to 12,078.62, 18,145.68 and 8,528.90

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Solution

The fourth proportional to 12,078.62, 18,145.68 and 8,528.90 is: 12,812.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.62 : 18,145.68 = 8,528.90 : x
  2. Step 2: Convert to fraction form
    12,078.62/18,145.68 = 8,528.90/x
  3. Step 3: Cross multiply
    12,078.62x = 18,145.68 × 8,528.90
  4. Step 4: Simplify right side
    12,078.62x = 154,762,690.15
  5. Step 5: Solve for x
    x = 154,762,690.15/12,078.62
  6. Step 6: Final answer
    x = 12,812.94

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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.