Home / 13,656.40-18,806.16-11,863.06

Finding the Fourth Proportional to 13,656.40, 18,806.16 and 11,863.06

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Solution

The fourth proportional to 13,656.40, 18,806.16 and 11,863.06 is: 16,336.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.40 : 18,806.16 = 11,863.06 : x
  2. Step 2: Convert to fraction form
    13,656.40/18,806.16 = 11,863.06/x
  3. Step 3: Cross multiply
    13,656.40x = 18,806.16 × 11,863.06
  4. Step 4: Simplify right side
    13,656.40x = 223,098,604.45
  5. Step 5: Solve for x
    x = 223,098,604.45/13,656.40
  6. Step 6: Final answer
    x = 16,336.56

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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.