Home / 12,891.62-19,339.29-4,889.33

Finding the Fourth Proportional to 12,891.62, 19,339.29 and 4,889.33

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Solution

The fourth proportional to 12,891.62, 19,339.29 and 4,889.33 is: 7,334.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,891.62 : 19,339.29 = 4,889.33 : x
  2. Step 2: Convert to fraction form
    12,891.62/19,339.29 = 4,889.33/x
  3. Step 3: Cross multiply
    12,891.62x = 19,339.29 × 4,889.33
  4. Step 4: Simplify right side
    12,891.62x = 94,556,200.79
  5. Step 5: Solve for x
    x = 94,556,200.79/12,891.62
  6. Step 6: Final answer
    x = 7,334.70

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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.