Home / 13,621.10-20,427.69-5,299.26

Finding the Fourth Proportional to 13,621.10, 20,427.69 and 5,299.26

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Solution

The fourth proportional to 13,621.10, 20,427.69 and 5,299.26 is: 7,947.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.10 : 20,427.69 = 5,299.26 : x
  2. Step 2: Convert to fraction form
    13,621.10/20,427.69 = 5,299.26/x
  3. Step 3: Cross multiply
    13,621.10x = 20,427.69 × 5,299.26
  4. Step 4: Simplify right side
    13,621.10x = 108,251,583.78
  5. Step 5: Solve for x
    x = 108,251,583.78/13,621.10
  6. Step 6: Final answer
    x = 7,947.35

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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.