Home / 28,990.50-43,485.75-8,214

Finding the Fourth Proportional to 28,990.50, 43,485.75 and 8,214

Calculator

Solution

The fourth proportional to 28,990.50, 43,485.75 and 8,214 is: 12,321

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990.50 : 43,485.75 = 8,214 : x
  2. Step 2: Convert to fraction form
    28,990.50/43,485.75 = 8,214/x
  3. Step 3: Cross multiply
    28,990.50x = 43,485.75 × 8,214
  4. Step 4: Simplify right side
    28,990.50x = 357,191,950.50
  5. Step 5: Solve for x
    x = 357,191,950.50/28,990.50
  6. Step 6: Final answer
    x = 12,321

Related Problems

Find fourth proportional to 14,495.25, 21,742.88 and 4,107
Half scale
Find fourth proportional to 57,981, 86,971.50 and 16,428
Double scale
Find fourth proportional to 28,991.50, 43,487.25 and 8,215
Similar ratio
Find fourth proportional to 43,485.75, 65,228.63 and 12,321
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.