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Finding the Fourth Proportional to 12,550.40, 18,828.80 and 8,859.82

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Solution

The fourth proportional to 12,550.40, 18,828.80 and 8,859.82 is: 13,291.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,550.40 : 18,828.80 = 8,859.82 : x
  2. Step 2: Convert to fraction form
    12,550.40/18,828.80 = 8,859.82/x
  3. Step 3: Cross multiply
    12,550.40x = 18,828.80 × 8,859.82
  4. Step 4: Simplify right side
    12,550.40x = 166,819,778.82
  5. Step 5: Solve for x
    x = 166,819,778.82/12,550.40
  6. Step 6: Final answer
    x = 13,291.99

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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.