Home / 13,261.28-18,314.82-8,237.43

Finding the Fourth Proportional to 13,261.28, 18,314.82 and 8,237.43

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Solution

The fourth proportional to 13,261.28, 18,314.82 and 8,237.43 is: 11,376.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,261.28 : 18,314.82 = 8,237.43 : x
  2. Step 2: Convert to fraction form
    13,261.28/18,314.82 = 8,237.43/x
  3. Step 3: Cross multiply
    13,261.28x = 18,314.82 × 8,237.43
  4. Step 4: Simplify right side
    13,261.28x = 150,867,047.71
  5. Step 5: Solve for x
    x = 150,867,047.71/13,261.28
  6. Step 6: Final answer
    x = 11,376.51

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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.