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Finding the Fourth Proportional to 13,753.60, 20,718.04 and 12,558.04

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Solution

The fourth proportional to 13,753.60, 20,718.04 and 12,558.04 is: 18,917.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,753.60 : 20,718.04 = 12,558.04 : x
  2. Step 2: Convert to fraction form
    13,753.60/20,718.04 = 12,558.04/x
  3. Step 3: Cross multiply
    13,753.60x = 20,718.04 × 12,558.04
  4. Step 4: Simplify right side
    13,753.60x = 260,177,975.04
  5. Step 5: Solve for x
    x = 260,177,975.04/13,753.60
  6. Step 6: Final answer
    x = 18,917.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.