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Finding the Fourth Proportional to 12,590.61, 18,883.22 and 5,193.15

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Solution

The fourth proportional to 12,590.61, 18,883.22 and 5,193.15 is: 7,788.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590.61 : 18,883.22 = 5,193.15 : x
  2. Step 2: Convert to fraction form
    12,590.61/18,883.22 = 5,193.15/x
  3. Step 3: Cross multiply
    12,590.61x = 18,883.22 × 5,193.15
  4. Step 4: Simplify right side
    12,590.61x = 98,063,367.98
  5. Step 5: Solve for x
    x = 98,063,367.98/12,590.61
  6. Step 6: Final answer
    x = 7,788.61

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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.