Home / 12,738.03-17,578.40-7,360.35

Finding the Fourth Proportional to 12,738.03, 17,578.40 and 7,360.35

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Solution

The fourth proportional to 12,738.03, 17,578.40 and 7,360.35 is: 10,157.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.03 : 17,578.40 = 7,360.35 : x
  2. Step 2: Convert to fraction form
    12,738.03/17,578.40 = 7,360.35/x
  3. Step 3: Cross multiply
    12,738.03x = 17,578.40 × 7,360.35
  4. Step 4: Simplify right side
    12,738.03x = 129,383,139.64
  5. Step 5: Solve for x
    x = 129,383,139.64/12,738.03
  6. Step 6: Final answer
    x = 10,157.23

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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.