Home / 13,369.26-20,042.62-8,428.01

Finding the Fourth Proportional to 13,369.26, 20,042.62 and 8,428.01

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Solution

The fourth proportional to 13,369.26, 20,042.62 and 8,428.01 is: 12,634.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,369.26 : 20,042.62 = 8,428.01 : x
  2. Step 2: Convert to fraction form
    13,369.26/20,042.62 = 8,428.01/x
  3. Step 3: Cross multiply
    13,369.26x = 20,042.62 × 8,428.01
  4. Step 4: Simplify right side
    13,369.26x = 168,919,280.50
  5. Step 5: Solve for x
    x = 168,919,280.50/13,369.26
  6. Step 6: Final answer
    x = 12,634.90

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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.