Home / 13,583.18-18,745.56-7,616.76

Finding the Fourth Proportional to 13,583.18, 18,745.56 and 7,616.76

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Solution

The fourth proportional to 13,583.18, 18,745.56 and 7,616.76 is: 10,511.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,583.18 : 18,745.56 = 7,616.76 : x
  2. Step 2: Convert to fraction form
    13,583.18/18,745.56 = 7,616.76/x
  3. Step 3: Cross multiply
    13,583.18x = 18,745.56 × 7,616.76
  4. Step 4: Simplify right side
    13,583.18x = 142,780,431.59
  5. Step 5: Solve for x
    x = 142,780,431.59/13,583.18
  6. Step 6: Final answer
    x = 10,511.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.