Home / 13,161.54-18,163.14-7,855.32

Finding the Fourth Proportional to 13,161.54, 18,163.14 and 7,855.32

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Solution

The fourth proportional to 13,161.54, 18,163.14 and 7,855.32 is: 10,840.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.54 : 18,163.14 = 7,855.32 : x
  2. Step 2: Convert to fraction form
    13,161.54/18,163.14 = 7,855.32/x
  3. Step 3: Cross multiply
    13,161.54x = 18,163.14 × 7,855.32
  4. Step 4: Simplify right side
    13,161.54x = 142,677,276.90
  5. Step 5: Solve for x
    x = 142,677,276.90/13,161.54
  6. Step 6: Final answer
    x = 10,840.47

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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.