Home / 12,690.51-19,037.62-3,926.11

Finding the Fourth Proportional to 12,690.51, 19,037.62 and 3,926.11

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Solution

The fourth proportional to 12,690.51, 19,037.62 and 3,926.11 is: 5,889.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,690.51 : 19,037.62 = 3,926.11 : x
  2. Step 2: Convert to fraction form
    12,690.51/19,037.62 = 3,926.11/x
  3. Step 3: Cross multiply
    12,690.51x = 19,037.62 × 3,926.11
  4. Step 4: Simplify right side
    12,690.51x = 74,743,761.18
  5. Step 5: Solve for x
    x = 74,743,761.18/12,690.51
  6. Step 6: Final answer
    x = 5,889.74

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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.