Home / 30,185-45,280-9,408.50

Finding the Fourth Proportional to 30,185, 45,280 and 9,408.50

Calculator

Solution

The fourth proportional to 30,185, 45,280 and 9,408.50 is: 14,113.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,185 : 45,280 = 9,408.50 : x
  2. Step 2: Convert to fraction form
    30,185/45,280 = 9,408.50/x
  3. Step 3: Cross multiply
    30,185x = 45,280 × 9,408.50
  4. Step 4: Simplify right side
    30,185x = 426,016,880
  5. Step 5: Solve for x
    x = 426,016,880/30,185
  6. Step 6: Final answer
    x = 14,113.53

Related Problems

Find fourth proportional to 15,092.50, 22,640 and 4,704.25
Half scale
Find fourth proportional to 60,370, 90,560 and 18,817
Double scale
Find fourth proportional to 30,186, 45,281.50 and 9,409.50
Similar ratio
Find fourth proportional to 45,277.50, 67,920 and 14,112.75
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.