Home / 13,692.16-18,895.19-7,404.54

Finding the Fourth Proportional to 13,692.16, 18,895.19 and 7,404.54

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Solution

The fourth proportional to 13,692.16, 18,895.19 and 7,404.54 is: 10,218.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,692.16 : 18,895.19 = 7,404.54 : x
  2. Step 2: Convert to fraction form
    13,692.16/18,895.19 = 7,404.54/x
  3. Step 3: Cross multiply
    13,692.16x = 18,895.19 × 7,404.54
  4. Step 4: Simplify right side
    13,692.16x = 139,910,105.90
  5. Step 5: Solve for x
    x = 139,910,105.90/13,692.16
  6. Step 6: Final answer
    x = 10,218.26

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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.