Home / 27,288-40,938.72-8,820

Finding the Fourth Proportional to 27,288, 40,938.72 and 8,820

Calculator

Solution

The fourth proportional to 27,288, 40,938.72 and 8,820 is: 13,232.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,288 : 40,938.72 = 8,820 : x
  2. Step 2: Convert to fraction form
    27,288/40,938.72 = 8,820/x
  3. Step 3: Cross multiply
    27,288x = 40,938.72 × 8,820
  4. Step 4: Simplify right side
    27,288x = 361,079,510.40
  5. Step 5: Solve for x
    x = 361,079,510.40/27,288
  6. Step 6: Final answer
    x = 13,232.17

Related Problems

Find fourth proportional to 13,644, 20,469.36 and 4,410
Half scale
Find fourth proportional to 54,576, 81,877.44 and 17,640
Double scale
Find fourth proportional to 27,289, 40,940.22 and 8,821
Similar ratio
Find fourth proportional to 40,932, 61,408.08 and 13,230
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.