Home / 13,199.08-18,209.44-7,894.12

Finding the Fourth Proportional to 13,199.08, 18,209.44 and 7,894.12

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Solution

The fourth proportional to 13,199.08, 18,209.44 and 7,894.12 is: 10,890.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,199.08 : 18,209.44 = 7,894.12 : x
  2. Step 2: Convert to fraction form
    13,199.08/18,209.44 = 7,894.12/x
  3. Step 3: Cross multiply
    13,199.08x = 18,209.44 × 7,894.12
  4. Step 4: Simplify right side
    13,199.08x = 143,747,504.49
  5. Step 5: Solve for x
    x = 143,747,504.49/13,199.08
  6. Step 6: Final answer
    x = 10,890.72

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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.