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Finding the Fourth Proportional to 13,736.03, 18,955.61 and 7,767.68

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Solution

The fourth proportional to 13,736.03, 18,955.61 and 7,767.68 is: 10,719.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,736.03 : 18,955.61 = 7,767.68 : x
  2. Step 2: Convert to fraction form
    13,736.03/18,955.61 = 7,767.68/x
  3. Step 3: Cross multiply
    13,736.03x = 18,955.61 × 7,767.68
  4. Step 4: Simplify right side
    13,736.03x = 147,241,150.36
  5. Step 5: Solve for x
    x = 147,241,150.36/13,736.03
  6. Step 6: Final answer
    x = 10,719.34

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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.