Home / 15,759.36-21,738.78-10,170.36

Finding the Fourth Proportional to 15,759.36, 21,738.78 and 10,170.36

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Solution

The fourth proportional to 15,759.36, 21,738.78 and 10,170.36 is: 14,029.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,759.36 : 21,738.78 = 10,170.36 : x
  2. Step 2: Convert to fraction form
    15,759.36/21,738.78 = 10,170.36/x
  3. Step 3: Cross multiply
    15,759.36x = 21,738.78 × 10,170.36
  4. Step 4: Simplify right side
    15,759.36x = 221,091,218.56
  5. Step 5: Solve for x
    x = 221,091,218.56/15,759.36
  6. Step 6: Final answer
    x = 14,029.20

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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.