Home / 40,138.06-60,186.60-13,474.90

Finding the Fourth Proportional to 40,138.06, 60,186.60 and 13,474.90

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Solution

The fourth proportional to 40,138.06, 60,186.60 and 13,474.90 is: 20,205.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,138.06 : 60,186.60 = 13,474.90 : x
  2. Step 2: Convert to fraction form
    40,138.06/60,186.60 = 13,474.90/x
  3. Step 3: Cross multiply
    40,138.06x = 60,186.60 × 13,474.90
  4. Step 4: Simplify right side
    40,138.06x = 811,008,416.34
  5. Step 5: Solve for x
    x = 811,008,416.34/40,138.06
  6. Step 6: Final answer
    x = 20,205.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.