Home / 12,590.60-18,884.78-4,270.42

Finding the Fourth Proportional to 12,590.60, 18,884.78 and 4,270.42

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Solution

The fourth proportional to 12,590.60, 18,884.78 and 4,270.42 is: 6,405.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590.60 : 18,884.78 = 4,270.42 : x
  2. Step 2: Convert to fraction form
    12,590.60/18,884.78 = 4,270.42/x
  3. Step 3: Cross multiply
    12,590.60x = 18,884.78 × 4,270.42
  4. Step 4: Simplify right side
    12,590.60x = 80,645,942.21
  5. Step 5: Solve for x
    x = 80,645,942.21/12,590.60
  6. Step 6: Final answer
    x = 6,405.25

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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.