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Finding the Fourth Proportional to 12,388.70, 17,101.74 and 7,609.41

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Solution

The fourth proportional to 12,388.70, 17,101.74 and 7,609.41 is: 10,504.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.70 : 17,101.74 = 7,609.41 : x
  2. Step 2: Convert to fraction form
    12,388.70/17,101.74 = 7,609.41/x
  3. Step 3: Cross multiply
    12,388.70x = 17,101.74 × 7,609.41
  4. Step 4: Simplify right side
    12,388.70x = 130,134,151.37
  5. Step 5: Solve for x
    x = 130,134,151.37/12,388.70
  6. Step 6: Final answer
    x = 10,504.27

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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.