Home / 13,551.80-18,701.40-8,245.56

Finding the Fourth Proportional to 13,551.80, 18,701.40 and 8,245.56

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Solution

The fourth proportional to 13,551.80, 18,701.40 and 8,245.56 is: 11,378.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,551.80 : 18,701.40 = 8,245.56 : x
  2. Step 2: Convert to fraction form
    13,551.80/18,701.40 = 8,245.56/x
  3. Step 3: Cross multiply
    13,551.80x = 18,701.40 × 8,245.56
  4. Step 4: Simplify right side
    13,551.80x = 154,203,515.78
  5. Step 5: Solve for x
    x = 154,203,515.78/13,551.80
  6. Step 6: Final answer
    x = 11,378.82

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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.