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Finding the Fourth Proportional to 18,646.47, 27,968.81 and 6,958.79

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Solution

The fourth proportional to 18,646.47, 27,968.81 and 6,958.79 is: 10,437.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,646.47 : 27,968.81 = 6,958.79 : x
  2. Step 2: Convert to fraction form
    18,646.47/27,968.81 = 6,958.79/x
  3. Step 3: Cross multiply
    18,646.47x = 27,968.81 × 6,958.79
  4. Step 4: Simplify right side
    18,646.47x = 194,628,900.70
  5. Step 5: Solve for x
    x = 194,628,900.70/18,646.47
  6. Step 6: Final answer
    x = 10,437.84

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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.