Home / 56,736-85,142.88-19,800

Finding the Fourth Proportional to 56,736, 85,142.88 and 19,800

Calculator

Solution

The fourth proportional to 56,736, 85,142.88 and 19,800 is: 29,713.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,736 : 85,142.88 = 19,800 : x
  2. Step 2: Convert to fraction form
    56,736/85,142.88 = 19,800/x
  3. Step 3: Cross multiply
    56,736x = 85,142.88 × 19,800
  4. Step 4: Simplify right side
    56,736x = 1,685,829,024
  5. Step 5: Solve for x
    x = 1,685,829,024/56,736
  6. Step 6: Final answer
    x = 29,713.57

Related Problems

Find fourth proportional to 28,368, 42,571.44 and 9,900
Half scale
Find fourth proportional to 113,472, 170,285.76 and 39,600
Double scale
Find fourth proportional to 56,737, 85,144.38 and 19,801
Similar ratio
Find fourth proportional to 85,104, 127,714.32 and 29,700
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.