Home / 42.35-63.47-19.50

Finding the Fourth Proportional to 42.35, 63.47 and 19.50

Calculator

Solution

The fourth proportional to 42.35, 63.47 and 19.50 is: 29.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    42.35 : 63.47 = 19.50 : x
  2. Step 2: Convert to fraction form
    42.35/63.47 = 19.50/x
  3. Step 3: Cross multiply
    42.35x = 63.47 × 19.50
  4. Step 4: Simplify right side
    42.35x = 1,237.67
  5. Step 5: Solve for x
    x = 1,237.67/42.35
  6. Step 6: Final answer
    x = 29.22

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.