Home / 13,692.07-18,895.11-7,404.45

Finding the Fourth Proportional to 13,692.07, 18,895.11 and 7,404.45

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Solution

The fourth proportional to 13,692.07, 18,895.11 and 7,404.45 is: 10,218.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,692.07 : 18,895.11 = 7,404.45 : x
  2. Step 2: Convert to fraction form
    13,692.07/18,895.11 = 7,404.45/x
  3. Step 3: Cross multiply
    13,692.07x = 18,895.11 × 7,404.45
  4. Step 4: Simplify right side
    13,692.07x = 139,907,798.62
  5. Step 5: Solve for x
    x = 139,907,798.62/13,692.07
  6. Step 6: Final answer
    x = 10,218.16

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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.