Home / 13,406.42-20,083.46-8,775.38

Finding the Fourth Proportional to 13,406.42, 20,083.46 and 8,775.38

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Solution

The fourth proportional to 13,406.42, 20,083.46 and 8,775.38 is: 13,145.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.42 : 20,083.46 = 8,775.38 : x
  2. Step 2: Convert to fraction form
    13,406.42/20,083.46 = 8,775.38/x
  3. Step 3: Cross multiply
    13,406.42x = 20,083.46 × 8,775.38
  4. Step 4: Simplify right side
    13,406.42x = 176,239,914.74
  5. Step 5: Solve for x
    x = 176,239,914.74/13,406.42
  6. Step 6: Final answer
    x = 13,145.94

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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.