Home / 21,905.52-30,240.99-13,419.96

Finding the Fourth Proportional to 21,905.52, 30,240.99 and 13,419.96

Calculator

Solution

The fourth proportional to 21,905.52, 30,240.99 and 13,419.96 is: 18,526.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,905.52 : 30,240.99 = 13,419.96 : x
  2. Step 2: Convert to fraction form
    21,905.52/30,240.99 = 13,419.96/x
  3. Step 3: Cross multiply
    21,905.52x = 30,240.99 × 13,419.96
  4. Step 4: Simplify right side
    21,905.52x = 405,832,876.16
  5. Step 5: Solve for x
    x = 405,832,876.16/21,905.52
  6. Step 6: Final answer
    x = 18,526.51

Related Problems

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.