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Finding the Fourth Proportional to 12,954.33, 17,878.59 and 7,289.33

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Solution

The fourth proportional to 12,954.33, 17,878.59 and 7,289.33 is: 10,060.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,954.33 : 17,878.59 = 7,289.33 : x
  2. Step 2: Convert to fraction form
    12,954.33/17,878.59 = 7,289.33/x
  3. Step 3: Cross multiply
    12,954.33x = 17,878.59 × 7,289.33
  4. Step 4: Simplify right side
    12,954.33x = 130,322,853.05
  5. Step 5: Solve for x
    x = 130,322,853.05/12,954.33
  6. Step 6: Final answer
    x = 10,060.18

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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.