Home / 56,576-84,864-19,640

Finding the Fourth Proportional to 56,576, 84,864 and 19,640

Calculator

Solution

The fourth proportional to 56,576, 84,864 and 19,640 is: 29,460

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,576 : 84,864 = 19,640 : x
  2. Step 2: Convert to fraction form
    56,576/84,864 = 19,640/x
  3. Step 3: Cross multiply
    56,576x = 84,864 × 19,640
  4. Step 4: Simplify right side
    56,576x = 1,666,728,960
  5. Step 5: Solve for x
    x = 1,666,728,960/56,576
  6. Step 6: Final answer
    x = 29,460

Related Problems

Find fourth proportional to 28,288, 42,432 and 9,820
Half scale
Find fourth proportional to 113,152, 169,728 and 39,280
Double scale
Find fourth proportional to 56,577, 84,865.50 and 19,641
Similar ratio
Find fourth proportional to 84,864, 127,296 and 29,460
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.