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Finding the Fourth Proportional to 18,975.14, 26,180.79 and 13,008.68

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Solution

The fourth proportional to 18,975.14, 26,180.79 and 13,008.68 is: 17,948.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,975.14 : 26,180.79 = 13,008.68 : x
  2. Step 2: Convert to fraction form
    18,975.14/26,180.79 = 13,008.68/x
  3. Step 3: Cross multiply
    18,975.14x = 26,180.79 × 13,008.68
  4. Step 4: Simplify right side
    18,975.14x = 340,577,519.26
  5. Step 5: Solve for x
    x = 340,577,519.26/18,975.14
  6. Step 6: Final answer
    x = 17,948.62

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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.