Home / 12,961.89-17,889.14-7,297.74

Finding the Fourth Proportional to 12,961.89, 17,889.14 and 7,297.74

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Solution

The fourth proportional to 12,961.89, 17,889.14 and 7,297.74 is: 10,071.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,961.89 : 17,889.14 = 7,297.74 : x
  2. Step 2: Convert to fraction form
    12,961.89/17,889.14 = 7,297.74/x
  3. Step 3: Cross multiply
    12,961.89x = 17,889.14 × 7,297.74
  4. Step 4: Simplify right side
    12,961.89x = 130,550,292.54
  5. Step 5: Solve for x
    x = 130,550,292.54/12,961.89
  6. Step 6: Final answer
    x = 10,071.86

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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.