Home / 15,861.32-21,887.76-8,787.32

Finding the Fourth Proportional to 15,861.32, 21,887.76 and 8,787.32

Calculator

Solution

The fourth proportional to 15,861.32, 21,887.76 and 8,787.32 is: 12,126.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,861.32 : 21,887.76 = 8,787.32 : x
  2. Step 2: Convert to fraction form
    15,861.32/21,887.76 = 8,787.32/x
  3. Step 3: Cross multiply
    15,861.32x = 21,887.76 × 8,787.32
  4. Step 4: Simplify right side
    15,861.32x = 192,334,751.20
  5. Step 5: Solve for x
    x = 192,334,751.20/15,861.32
  6. Step 6: Final answer
    x = 12,126.02

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.