Home / 28,576.08-39,672.54-27,720.72

Finding the Fourth Proportional to 28,576.08, 39,672.54 and 27,720.72

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Solution

The fourth proportional to 28,576.08, 39,672.54 and 27,720.72 is: 38,485.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,576.08 : 39,672.54 = 27,720.72 : x
  2. Step 2: Convert to fraction form
    28,576.08/39,672.54 = 27,720.72/x
  3. Step 3: Cross multiply
    28,576.08x = 39,672.54 × 27,720.72
  4. Step 4: Simplify right side
    28,576.08x = 1,099,751,373.03
  5. Step 5: Solve for x
    x = 1,099,751,373.03/28,576.08
  6. Step 6: Final answer
    x = 38,485.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.