Home / 12,590.85-18,885.47-3,825.84

Finding the Fourth Proportional to 12,590.85, 18,885.47 and 3,825.84

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Solution

The fourth proportional to 12,590.85, 18,885.47 and 3,825.84 is: 5,738.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590.85 : 18,885.47 = 3,825.84 : x
  2. Step 2: Convert to fraction form
    12,590.85/18,885.47 = 3,825.84/x
  3. Step 3: Cross multiply
    12,590.85x = 18,885.47 × 3,825.84
  4. Step 4: Simplify right side
    12,590.85x = 72,252,767.42
  5. Step 5: Solve for x
    x = 72,252,767.42/12,590.85
  6. Step 6: Final answer
    x = 5,738.51

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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.