Home / 12,669.60-19,009.80-8,771.88

Finding the Fourth Proportional to 12,669.60, 19,009.80 and 8,771.88

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Solution

The fourth proportional to 12,669.60, 19,009.80 and 8,771.88 is: 13,161.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,669.60 : 19,009.80 = 8,771.88 : x
  2. Step 2: Convert to fraction form
    12,669.60/19,009.80 = 8,771.88/x
  3. Step 3: Cross multiply
    12,669.60x = 19,009.80 × 8,771.88
  4. Step 4: Simplify right side
    12,669.60x = 166,751,684.42
  5. Step 5: Solve for x
    x = 166,751,684.42/12,669.60
  6. Step 6: Final answer
    x = 13,161.56

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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.