Home / 12,581.24-18,855.58-5,177.32

Finding the Fourth Proportional to 12,581.24, 18,855.58 and 5,177.32

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Solution

The fourth proportional to 12,581.24, 18,855.58 and 5,177.32 is: 7,759.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,581.24 : 18,855.58 = 5,177.32 : x
  2. Step 2: Convert to fraction form
    12,581.24/18,855.58 = 5,177.32/x
  3. Step 3: Cross multiply
    12,581.24x = 18,855.58 × 5,177.32
  4. Step 4: Simplify right side
    12,581.24x = 97,621,371.45
  5. Step 5: Solve for x
    x = 97,621,371.45/12,581.24
  6. Step 6: Final answer
    x = 7,759.28

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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.