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Finding the Fourth Proportional to 13,797.51, 20,683.30 and 10,979.42

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Solution

The fourth proportional to 13,797.51, 20,683.30 and 10,979.42 is: 16,458.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,797.51 : 20,683.30 = 10,979.42 : x
  2. Step 2: Convert to fraction form
    13,797.51/20,683.30 = 10,979.42/x
  3. Step 3: Cross multiply
    13,797.51x = 20,683.30 × 10,979.42
  4. Step 4: Simplify right side
    13,797.51x = 227,090,667.18
  5. Step 5: Solve for x
    x = 227,090,667.18/13,797.51
  6. Step 6: Final answer
    x = 16,458.81

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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.