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Finding the Fourth Proportional to 13,504.76, 18,640.78 and 10,984.92

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Solution

The fourth proportional to 13,504.76, 18,640.78 and 10,984.92 is: 15,162.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,504.76 : 18,640.78 = 10,984.92 : x
  2. Step 2: Convert to fraction form
    13,504.76/18,640.78 = 10,984.92/x
  3. Step 3: Cross multiply
    13,504.76x = 18,640.78 × 10,984.92
  4. Step 4: Simplify right side
    13,504.76x = 204,767,477.04
  5. Step 5: Solve for x
    x = 204,767,477.04/13,504.76
  6. Step 6: Final answer
    x = 15,162.62

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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.