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Finding the Fourth Proportional to 13,502.60, 18,605.94 and 9,960.20

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Solution

The fourth proportional to 13,502.60, 18,605.94 and 9,960.20 is: 13,724.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,502.60 : 18,605.94 = 9,960.20 : x
  2. Step 2: Convert to fraction form
    13,502.60/18,605.94 = 9,960.20/x
  3. Step 3: Cross multiply
    13,502.60x = 18,605.94 × 9,960.20
  4. Step 4: Simplify right side
    13,502.60x = 185,318,883.59
  5. Step 5: Solve for x
    x = 185,318,883.59/13,502.60
  6. Step 6: Final answer
    x = 13,724.68

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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.