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Finding the Fourth Proportional to 13,480.56, 18,603 and 8,773.92

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Solution

The fourth proportional to 13,480.56, 18,603 and 8,773.92 is: 12,107.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480.56 : 18,603 = 8,773.92 : x
  2. Step 2: Convert to fraction form
    13,480.56/18,603 = 8,773.92/x
  3. Step 3: Cross multiply
    13,480.56x = 18,603 × 8,773.92
  4. Step 4: Simplify right side
    13,480.56x = 163,221,233.76
  5. Step 5: Solve for x
    x = 163,221,233.76/13,480.56
  6. Step 6: Final answer
    x = 12,107.90

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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.