Home / 13,266.60-19,900.61-3,405.96

Finding the Fourth Proportional to 13,266.60, 19,900.61 and 3,405.96

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Solution

The fourth proportional to 13,266.60, 19,900.61 and 3,405.96 is: 5,109.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,266.60 : 19,900.61 = 3,405.96 : x
  2. Step 2: Convert to fraction form
    13,266.60/19,900.61 = 3,405.96/x
  3. Step 3: Cross multiply
    13,266.60x = 19,900.61 × 3,405.96
  4. Step 4: Simplify right side
    13,266.60x = 67,780,677.38
  5. Step 5: Solve for x
    x = 67,780,677.38/13,266.60
  6. Step 6: Final answer
    x = 5,109.12

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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.