Home / 13,426.96-20,143.32-5,631.28

Finding the Fourth Proportional to 13,426.96, 20,143.32 and 5,631.28

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Solution

The fourth proportional to 13,426.96, 20,143.32 and 5,631.28 is: 8,448.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,426.96 : 20,143.32 = 5,631.28 : x
  2. Step 2: Convert to fraction form
    13,426.96/20,143.32 = 5,631.28/x
  3. Step 3: Cross multiply
    13,426.96x = 20,143.32 × 5,631.28
  4. Step 4: Simplify right side
    13,426.96x = 113,432,675.05
  5. Step 5: Solve for x
    x = 113,432,675.05/13,426.96
  6. Step 6: Final answer
    x = 8,448.13

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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.