Home / 13,165.21-18,168.11-7,196.77

Finding the Fourth Proportional to 13,165.21, 18,168.11 and 7,196.77

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Solution

The fourth proportional to 13,165.21, 18,168.11 and 7,196.77 is: 9,931.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,165.21 : 18,168.11 = 7,196.77 : x
  2. Step 2: Convert to fraction form
    13,165.21/18,168.11 = 7,196.77/x
  3. Step 3: Cross multiply
    13,165.21x = 18,168.11 × 7,196.77
  4. Step 4: Simplify right side
    13,165.21x = 130,751,709.00
  5. Step 5: Solve for x
    x = 130,751,709.00/13,165.21
  6. Step 6: Final answer
    x = 9,931.61

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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.