Home / 13,081.21-18,051.18-7,415.39

Finding the Fourth Proportional to 13,081.21, 18,051.18 and 7,415.39

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Solution

The fourth proportional to 13,081.21, 18,051.18 and 7,415.39 is: 10,232.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081.21 : 18,051.18 = 7,415.39 : x
  2. Step 2: Convert to fraction form
    13,081.21/18,051.18 = 7,415.39/x
  3. Step 3: Cross multiply
    13,081.21x = 18,051.18 × 7,415.39
  4. Step 4: Simplify right side
    13,081.21x = 133,856,539.66
  5. Step 5: Solve for x
    x = 133,856,539.66/13,081.21
  6. Step 6: Final answer
    x = 10,232.73

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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.