Home / 12,905.36-19,352.37-6,668.90

Finding the Fourth Proportional to 12,905.36, 19,352.37 and 6,668.90

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Solution

The fourth proportional to 12,905.36, 19,352.37 and 6,668.90 is: 10,000.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.36 : 19,352.37 = 6,668.90 : x
  2. Step 2: Convert to fraction form
    12,905.36/19,352.37 = 6,668.90/x
  3. Step 3: Cross multiply
    12,905.36x = 19,352.37 × 6,668.90
  4. Step 4: Simplify right side
    12,905.36x = 129,059,020.29
  5. Step 5: Solve for x
    x = 129,059,020.29/12,905.36
  6. Step 6: Final answer
    x = 10,000.42

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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.