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Finding the Fourth Proportional to 12,756.42, 19,135.62 and 3,522.42

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Solution

The fourth proportional to 12,756.42, 19,135.62 and 3,522.42 is: 5,283.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,756.42 : 19,135.62 = 3,522.42 : x
  2. Step 2: Convert to fraction form
    12,756.42/19,135.62 = 3,522.42/x
  3. Step 3: Cross multiply
    12,756.42x = 19,135.62 × 3,522.42
  4. Step 4: Simplify right side
    12,756.42x = 67,403,690.60
  5. Step 5: Solve for x
    x = 67,403,690.60/12,756.42
  6. Step 6: Final answer
    x = 5,283.90

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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.