Home / 9,319.66-13,979.44-5,421.33

Finding the Fourth Proportional to 9,319.66, 13,979.44 and 5,421.33

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Solution

The fourth proportional to 9,319.66, 13,979.44 and 5,421.33 is: 8,131.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319.66 : 13,979.44 = 5,421.33 : x
  2. Step 2: Convert to fraction form
    9,319.66/13,979.44 = 5,421.33/x
  3. Step 3: Cross multiply
    9,319.66x = 13,979.44 × 5,421.33
  4. Step 4: Simplify right side
    9,319.66x = 75,787,133.74
  5. Step 5: Solve for x
    x = 75,787,133.74/9,319.66
  6. Step 6: Final answer
    x = 8,131.97

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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.