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Finding the Fourth Proportional to 13,040.12, 17,994 and 8,004.54

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Solution

The fourth proportional to 13,040.12, 17,994 and 8,004.54 is: 11,045.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,040.12 : 17,994 = 8,004.54 : x
  2. Step 2: Convert to fraction form
    13,040.12/17,994 = 8,004.54/x
  3. Step 3: Cross multiply
    13,040.12x = 17,994 × 8,004.54
  4. Step 4: Simplify right side
    13,040.12x = 144,033,692.76
  5. Step 5: Solve for x
    x = 144,033,692.76/13,040.12
  6. Step 6: Final answer
    x = 11,045.43

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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.