Home / 13,479.21-18,606.11-9,704.61

Finding the Fourth Proportional to 13,479.21, 18,606.11 and 9,704.61

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Solution

The fourth proportional to 13,479.21, 18,606.11 and 9,704.61 is: 13,395.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479.21 : 18,606.11 = 9,704.61 : x
  2. Step 2: Convert to fraction form
    13,479.21/18,606.11 = 9,704.61/x
  3. Step 3: Cross multiply
    13,479.21x = 18,606.11 × 9,704.61
  4. Step 4: Simplify right side
    13,479.21x = 180,564,992.64
  5. Step 5: Solve for x
    x = 180,564,992.64/13,479.21
  6. Step 6: Final answer
    x = 13,395.81

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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.