Home / 12,590.40-18,885.63-3,825.39

Finding the Fourth Proportional to 12,590.40, 18,885.63 and 3,825.39

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Solution

The fourth proportional to 12,590.40, 18,885.63 and 3,825.39 is: 5,738.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590.40 : 18,885.63 = 3,825.39 : x
  2. Step 2: Convert to fraction form
    12,590.40/18,885.63 = 3,825.39/x
  3. Step 3: Cross multiply
    12,590.40x = 18,885.63 × 3,825.39
  4. Step 4: Simplify right side
    12,590.40x = 72,244,900.15
  5. Step 5: Solve for x
    x = 72,244,900.15/12,590.40
  6. Step 6: Final answer
    x = 5,738.09

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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.