Home / 12,691.26-19,038.74-3,926.86

Finding the Fourth Proportional to 12,691.26, 19,038.74 and 3,926.86

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Solution

The fourth proportional to 12,691.26, 19,038.74 and 3,926.86 is: 5,890.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691.26 : 19,038.74 = 3,926.86 : x
  2. Step 2: Convert to fraction form
    12,691.26/19,038.74 = 3,926.86/x
  3. Step 3: Cross multiply
    12,691.26x = 19,038.74 × 3,926.86
  4. Step 4: Simplify right side
    12,691.26x = 74,762,428.78
  5. Step 5: Solve for x
    x = 74,762,428.78/12,691.26
  6. Step 6: Final answer
    x = 5,890.86

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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.