Home / 28,790.10-39,735.09-18,195.30

Finding the Fourth Proportional to 28,790.10, 39,735.09 and 18,195.30

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Solution

The fourth proportional to 28,790.10, 39,735.09 and 18,195.30 is: 25,112.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,790.10 : 39,735.09 = 18,195.30 : x
  2. Step 2: Convert to fraction form
    28,790.10/39,735.09 = 18,195.30/x
  3. Step 3: Cross multiply
    28,790.10x = 39,735.09 × 18,195.30
  4. Step 4: Simplify right side
    28,790.10x = 722,991,883.08
  5. Step 5: Solve for x
    x = 722,991,883.08/28,790.10
  6. Step 6: Final answer
    x = 25,112.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.