Home / 30,971.53-42,738.55-17,173.74

Finding the Fourth Proportional to 30,971.53, 42,738.55 and 17,173.74

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Solution

The fourth proportional to 30,971.53, 42,738.55 and 17,173.74 is: 23,698.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,971.53 : 42,738.55 = 17,173.74 : x
  2. Step 2: Convert to fraction form
    30,971.53/42,738.55 = 17,173.74/x
  3. Step 3: Cross multiply
    30,971.53x = 42,738.55 × 17,173.74
  4. Step 4: Simplify right side
    30,971.53x = 733,980,745.68
  5. Step 5: Solve for x
    x = 733,980,745.68/30,971.53
  6. Step 6: Final answer
    x = 23,698.56

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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.