Home / 12,690.48-19,036.68-3,926.28

Finding the Fourth Proportional to 12,690.48, 19,036.68 and 3,926.28

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Solution

The fourth proportional to 12,690.48, 19,036.68 and 3,926.28 is: 5,889.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,690.48 : 19,036.68 = 3,926.28 : x
  2. Step 2: Convert to fraction form
    12,690.48/19,036.68 = 3,926.28/x
  3. Step 3: Cross multiply
    12,690.48x = 19,036.68 × 3,926.28
  4. Step 4: Simplify right side
    12,690.48x = 74,743,335.95
  5. Step 5: Solve for x
    x = 74,743,335.95/12,690.48
  6. Step 6: Final answer
    x = 5,889.72

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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.