Home / 20,777.72-31,111.16-10,896.26

Finding the Fourth Proportional to 20,777.72, 31,111.16 and 10,896.26

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Solution

The fourth proportional to 20,777.72, 31,111.16 and 10,896.26 is: 16,315.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777.72 : 31,111.16 = 10,896.26 : x
  2. Step 2: Convert to fraction form
    20,777.72/31,111.16 = 10,896.26/x
  3. Step 3: Cross multiply
    20,777.72x = 31,111.16 × 10,896.26
  4. Step 4: Simplify right side
    20,777.72x = 338,995,078.22
  5. Step 5: Solve for x
    x = 338,995,078.22/20,777.72
  6. Step 6: Final answer
    x = 16,315.32

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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.