Home / 30,266-45,399-8,378

Finding the Fourth Proportional to 30,266, 45,399 and 8,378

Calculator

Solution

The fourth proportional to 30,266, 45,399 and 8,378 is: 12,567

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,266 : 45,399 = 8,378 : x
  2. Step 2: Convert to fraction form
    30,266/45,399 = 8,378/x
  3. Step 3: Cross multiply
    30,266x = 45,399 × 8,378
  4. Step 4: Simplify right side
    30,266x = 380,352,822
  5. Step 5: Solve for x
    x = 380,352,822/30,266
  6. Step 6: Final answer
    x = 12,567

Related Problems

Find fourth proportional to 15,133, 22,699.50 and 4,189
Half scale
Find fourth proportional to 60,532, 90,798 and 16,756
Double scale
Find fourth proportional to 30,267, 45,400.50 and 8,379
Similar ratio
Find fourth proportional to 45,399, 68,098.50 and 12,567
1.5x scale

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.