Home / 13,660.10-18,850.75-7,692.36

Finding the Fourth Proportional to 13,660.10, 18,850.75 and 7,692.36

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Solution

The fourth proportional to 13,660.10, 18,850.75 and 7,692.36 is: 10,615.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,660.10 : 18,850.75 = 7,692.36 : x
  2. Step 2: Convert to fraction form
    13,660.10/18,850.75 = 7,692.36/x
  3. Step 3: Cross multiply
    13,660.10x = 18,850.75 × 7,692.36
  4. Step 4: Simplify right side
    13,660.10x = 145,006,755.27
  5. Step 5: Solve for x
    x = 145,006,755.27/13,660.10
  6. Step 6: Final answer
    x = 10,615.35

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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.