Home / 12,880.37-19,319.26-3,521.22

Finding the Fourth Proportional to 12,880.37, 19,319.26 and 3,521.22

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Solution

The fourth proportional to 12,880.37, 19,319.26 and 3,521.22 is: 5,281.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880.37 : 19,319.26 = 3,521.22 : x
  2. Step 2: Convert to fraction form
    12,880.37/19,319.26 = 3,521.22/x
  3. Step 3: Cross multiply
    12,880.37x = 19,319.26 × 3,521.22
  4. Step 4: Simplify right side
    12,880.37x = 68,027,398.72
  5. Step 5: Solve for x
    x = 68,027,398.72/12,880.37
  6. Step 6: Final answer
    x = 5,281.48

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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.