Home / 30,826.52-42,540.62-21,400.55

Finding the Fourth Proportional to 30,826.52, 42,540.62 and 21,400.55

Calculator

Solution

The fourth proportional to 30,826.52, 42,540.62 and 21,400.55 is: 29,532.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,826.52 : 42,540.62 = 21,400.55 : x
  2. Step 2: Convert to fraction form
    30,826.52/42,540.62 = 21,400.55/x
  3. Step 3: Cross multiply
    30,826.52x = 42,540.62 × 21,400.55
  4. Step 4: Simplify right side
    30,826.52x = 910,392,345.64
  5. Step 5: Solve for x
    x = 910,392,345.64/30,826.52
  6. Step 6: Final answer
    x = 29,532.77

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.