Home / 12,990.69-19,481.24-4,668.47

Finding the Fourth Proportional to 12,990.69, 19,481.24 and 4,668.47

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Solution

The fourth proportional to 12,990.69, 19,481.24 and 4,668.47 is: 7,000.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,990.69 : 19,481.24 = 4,668.47 : x
  2. Step 2: Convert to fraction form
    12,990.69/19,481.24 = 4,668.47/x
  3. Step 3: Cross multiply
    12,990.69x = 19,481.24 × 4,668.47
  4. Step 4: Simplify right side
    12,990.69x = 90,947,584.50
  5. Step 5: Solve for x
    x = 90,947,584.50/12,990.69
  6. Step 6: Final answer
    x = 7,000.98

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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.