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Finding the Fourth Proportional to 18,659.14, 27,988.38 and 4,619.14

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Solution

The fourth proportional to 18,659.14, 27,988.38 and 4,619.14 is: 6,928.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,659.14 : 27,988.38 = 4,619.14 : x
  2. Step 2: Convert to fraction form
    18,659.14/27,988.38 = 4,619.14/x
  3. Step 3: Cross multiply
    18,659.14x = 27,988.38 × 4,619.14
  4. Step 4: Simplify right side
    18,659.14x = 129,282,245.59
  5. Step 5: Solve for x
    x = 129,282,245.59/18,659.14
  6. Step 6: Final answer
    x = 6,928.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.