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Finding the Fourth Proportional to 13,119.58, 18,101.91 and 7,454.44

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Solution

The fourth proportional to 13,119.58, 18,101.91 and 7,454.44 is: 10,285.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,119.58 : 18,101.91 = 7,454.44 : x
  2. Step 2: Convert to fraction form
    13,119.58/18,101.91 = 7,454.44/x
  3. Step 3: Cross multiply
    13,119.58x = 18,101.91 × 7,454.44
  4. Step 4: Simplify right side
    13,119.58x = 134,939,601.98
  5. Step 5: Solve for x
    x = 134,939,601.98/13,119.58
  6. Step 6: Final answer
    x = 10,285.36

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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.