Home / 20,902.69-28,843.80-12,403.35

Finding the Fourth Proportional to 20,902.69, 28,843.80 and 12,403.35

Calculator

Solution

The fourth proportional to 20,902.69, 28,843.80 and 12,403.35 is: 17,115.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,902.69 : 28,843.80 = 12,403.35 : x
  2. Step 2: Convert to fraction form
    20,902.69/28,843.80 = 12,403.35/x
  3. Step 3: Cross multiply
    20,902.69x = 28,843.80 × 12,403.35
  4. Step 4: Simplify right side
    20,902.69x = 357,759,746.73
  5. Step 5: Solve for x
    x = 357,759,746.73/20,902.69
  6. Step 6: Final answer
    x = 17,115.49

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.