Home / 13,853.10-19,115.88-7,884.42

Finding the Fourth Proportional to 13,853.10, 19,115.88 and 7,884.42

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Solution

The fourth proportional to 13,853.10, 19,115.88 and 7,884.42 is: 10,879.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,853.10 : 19,115.88 = 7,884.42 : x
  2. Step 2: Convert to fraction form
    13,853.10/19,115.88 = 7,884.42/x
  3. Step 3: Cross multiply
    13,853.10x = 19,115.88 × 7,884.42
  4. Step 4: Simplify right side
    13,853.10x = 150,717,626.59
  5. Step 5: Solve for x
    x = 150,717,626.59/13,853.10
  6. Step 6: Final answer
    x = 10,879.70

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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.