Home / 13,563.28-18,713.73-8,257.78

Finding the Fourth Proportional to 13,563.28, 18,713.73 and 8,257.78

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Solution

The fourth proportional to 13,563.28, 18,713.73 and 8,257.78 is: 11,393.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,563.28 : 18,713.73 = 8,257.78 : x
  2. Step 2: Convert to fraction form
    13,563.28/18,713.73 = 8,257.78/x
  3. Step 3: Cross multiply
    13,563.28x = 18,713.73 × 8,257.78
  4. Step 4: Simplify right side
    13,563.28x = 154,533,865.32
  5. Step 5: Solve for x
    x = 154,533,865.32/13,563.28
  6. Step 6: Final answer
    x = 11,393.55

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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.