Home / 18,787.40-28,160.76-12,218.30

Finding the Fourth Proportional to 18,787.40, 28,160.76 and 12,218.30

Calculator

Solution

The fourth proportional to 18,787.40, 28,160.76 and 12,218.30 is: 18,314.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.40 : 28,160.76 = 12,218.30 : x
  2. Step 2: Convert to fraction form
    18,787.40/28,160.76 = 12,218.30/x
  3. Step 3: Cross multiply
    18,787.40x = 28,160.76 × 12,218.30
  4. Step 4: Simplify right side
    18,787.40x = 344,076,613.91
  5. Step 5: Solve for x
    x = 344,076,613.91/18,787.40
  6. Step 6: Final answer
    x = 18,314.22

Related Problems

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.