Home / 13,717.08-18,922.68-8,999.64

Finding the Fourth Proportional to 13,717.08, 18,922.68 and 8,999.64

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Solution

The fourth proportional to 13,717.08, 18,922.68 and 8,999.64 is: 12,414.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,717.08 : 18,922.68 = 8,999.64 : x
  2. Step 2: Convert to fraction form
    13,717.08/18,922.68 = 8,999.64/x
  3. Step 3: Cross multiply
    13,717.08x = 18,922.68 × 8,999.64
  4. Step 4: Simplify right side
    13,717.08x = 170,297,307.84
  5. Step 5: Solve for x
    x = 170,297,307.84/13,717.08
  6. Step 6: Final answer
    x = 12,414.98

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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.