Home / 12,666.60-19,003.56-3,902.80

Finding the Fourth Proportional to 12,666.60, 19,003.56 and 3,902.80

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Solution

The fourth proportional to 12,666.60, 19,003.56 and 3,902.80 is: 5,855.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,666.60 : 19,003.56 = 3,902.80 : x
  2. Step 2: Convert to fraction form
    12,666.60/19,003.56 = 3,902.80/x
  3. Step 3: Cross multiply
    12,666.60x = 19,003.56 × 3,902.80
  4. Step 4: Simplify right side
    12,666.60x = 74,167,093.97
  5. Step 5: Solve for x
    x = 74,167,093.97/12,666.60
  6. Step 6: Final answer
    x = 5,855.33

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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.