Home / 12,539.61-18,789.98-5,137.83

Finding the Fourth Proportional to 12,539.61, 18,789.98 and 5,137.83

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Solution

The fourth proportional to 12,539.61, 18,789.98 and 5,137.83 is: 7,698.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,539.61 : 18,789.98 = 5,137.83 : x
  2. Step 2: Convert to fraction form
    12,539.61/18,789.98 = 5,137.83/x
  3. Step 3: Cross multiply
    12,539.61x = 18,789.98 × 5,137.83
  4. Step 4: Simplify right side
    12,539.61x = 96,539,697.25
  5. Step 5: Solve for x
    x = 96,539,697.25/12,539.61
  6. Step 6: Final answer
    x = 7,698.78

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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.