Home / 12,665.65-17,469.53-8,889.66

Finding the Fourth Proportional to 12,665.65, 17,469.53 and 8,889.66

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Solution

The fourth proportional to 12,665.65, 17,469.53 and 8,889.66 is: 12,261.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,665.65 : 17,469.53 = 8,889.66 : x
  2. Step 2: Convert to fraction form
    12,665.65/17,469.53 = 8,889.66/x
  3. Step 3: Cross multiply
    12,665.65x = 17,469.53 × 8,889.66
  4. Step 4: Simplify right side
    12,665.65x = 155,298,122.03
  5. Step 5: Solve for x
    x = 155,298,122.03/12,665.65
  6. Step 6: Final answer
    x = 12,261.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.