Home / 12,679.48-19,000.62-7,143.52

Finding the Fourth Proportional to 12,679.48, 19,000.62 and 7,143.52

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Solution

The fourth proportional to 12,679.48, 19,000.62 and 7,143.52 is: 10,704.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,679.48 : 19,000.62 = 7,143.52 : x
  2. Step 2: Convert to fraction form
    12,679.48/19,000.62 = 7,143.52/x
  3. Step 3: Cross multiply
    12,679.48x = 19,000.62 × 7,143.52
  4. Step 4: Simplify right side
    12,679.48x = 135,731,308.98
  5. Step 5: Solve for x
    x = 135,731,308.98/12,679.48
  6. Step 6: Final answer
    x = 10,704.80

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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.