Home / 13,419.37-18,518.81-7,369.87

Finding the Fourth Proportional to 13,419.37, 18,518.81 and 7,369.87

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Solution

The fourth proportional to 13,419.37, 18,518.81 and 7,369.87 is: 10,170.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.37 : 18,518.81 = 7,369.87 : x
  2. Step 2: Convert to fraction form
    13,419.37/18,518.81 = 7,369.87/x
  3. Step 3: Cross multiply
    13,419.37x = 18,518.81 × 7,369.87
  4. Step 4: Simplify right side
    13,419.37x = 136,481,185.41
  5. Step 5: Solve for x
    x = 136,481,185.41/13,419.37
  6. Step 6: Final answer
    x = 10,170.46

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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.