Home / 13,269.36-18,311.26-7,818.42

Finding the Fourth Proportional to 13,269.36, 18,311.26 and 7,818.42

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Solution

The fourth proportional to 13,269.36, 18,311.26 and 7,818.42 is: 10,789.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,269.36 : 18,311.26 = 7,818.42 : x
  2. Step 2: Convert to fraction form
    13,269.36/18,311.26 = 7,818.42/x
  3. Step 3: Cross multiply
    13,269.36x = 18,311.26 × 7,818.42
  4. Step 4: Simplify right side
    13,269.36x = 143,165,121.41
  5. Step 5: Solve for x
    x = 143,165,121.41/13,269.36
  6. Step 6: Final answer
    x = 10,789.15

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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.