Home / 30,761.40-42,421.50-22,319.40

Finding the Fourth Proportional to 30,761.40, 42,421.50 and 22,319.40

Calculator

Solution

The fourth proportional to 30,761.40, 42,421.50 and 22,319.40 is: 30,779.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,761.40 : 42,421.50 = 22,319.40 : x
  2. Step 2: Convert to fraction form
    30,761.40/42,421.50 = 22,319.40/x
  3. Step 3: Cross multiply
    30,761.40x = 42,421.50 × 22,319.40
  4. Step 4: Simplify right side
    30,761.40x = 946,822,427.10
  5. Step 5: Solve for x
    x = 946,822,427.10/30,761.40
  6. Step 6: Final answer
    x = 30,779.56

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.