Home / 12,690.42-19,035.62-3,925.14

Finding the Fourth Proportional to 12,690.42, 19,035.62 and 3,925.14

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Solution

The fourth proportional to 12,690.42, 19,035.62 and 3,925.14 is: 5,887.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,690.42 : 19,035.62 = 3,925.14 : x
  2. Step 2: Convert to fraction form
    12,690.42/19,035.62 = 3,925.14/x
  3. Step 3: Cross multiply
    12,690.42x = 19,035.62 × 3,925.14
  4. Step 4: Simplify right side
    12,690.42x = 74,717,473.49
  5. Step 5: Solve for x
    x = 74,717,473.49/12,690.42
  6. Step 6: Final answer
    x = 5,887.71

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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.