Home / 13,563.06-18,718.74-8,257.56

Finding the Fourth Proportional to 13,563.06, 18,718.74 and 8,257.56

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Solution

The fourth proportional to 13,563.06, 18,718.74 and 8,257.56 is: 11,396.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,563.06 : 18,718.74 = 8,257.56 : x
  2. Step 2: Convert to fraction form
    13,563.06/18,718.74 = 8,257.56/x
  3. Step 3: Cross multiply
    13,563.06x = 18,718.74 × 8,257.56
  4. Step 4: Simplify right side
    13,563.06x = 154,571,118.67
  5. Step 5: Solve for x
    x = 154,571,118.67/13,563.06
  6. Step 6: Final answer
    x = 11,396.48

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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.