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Finding the Fourth Proportional to 12,668.93, 19,005.44 and 3,903.84

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Solution

The fourth proportional to 12,668.93, 19,005.44 and 3,903.84 is: 5,856.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.93 : 19,005.44 = 3,903.84 : x
  2. Step 2: Convert to fraction form
    12,668.93/19,005.44 = 3,903.84/x
  3. Step 3: Cross multiply
    12,668.93x = 19,005.44 × 3,903.84
  4. Step 4: Simplify right side
    12,668.93x = 74,194,244.40
  5. Step 5: Solve for x
    x = 74,194,244.40/12,668.93
  6. Step 6: Final answer
    x = 5,856.39

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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.