Home / 14,310.88-21,470.80-6,420

Finding the Fourth Proportional to 14,310.88, 21,470.80 and 6,420

Calculator

Solution

The fourth proportional to 14,310.88, 21,470.80 and 6,420 is: 9,632.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,310.88 : 21,470.80 = 6,420 : x
  2. Step 2: Convert to fraction form
    14,310.88/21,470.80 = 6,420/x
  3. Step 3: Cross multiply
    14,310.88x = 21,470.80 × 6,420
  4. Step 4: Simplify right side
    14,310.88x = 137,842,536
  5. Step 5: Solve for x
    x = 137,842,536/14,310.88
  6. Step 6: Final answer
    x = 9,632.01

Related Problems

Find fourth proportional to 7,155.44, 10,735.40 and 3,210
Half scale
Find fourth proportional to 28,621.76, 42,941.60 and 12,840
Double scale
Find fourth proportional to 14,311.88, 21,472.30 and 6,421
Similar ratio
Find fourth proportional to 21,466.32, 32,206.20 and 9,630
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.