Home / 28,661.25-42,969.26-18,109.03

Finding the Fourth Proportional to 28,661.25, 42,969.26 and 18,109.03

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Solution

The fourth proportional to 28,661.25, 42,969.26 and 18,109.03 is: 27,149.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,661.25 : 42,969.26 = 18,109.03 : x
  2. Step 2: Convert to fraction form
    28,661.25/42,969.26 = 18,109.03/x
  3. Step 3: Cross multiply
    28,661.25x = 42,969.26 × 18,109.03
  4. Step 4: Simplify right side
    28,661.25x = 778,131,592.67
  5. Step 5: Solve for x
    x = 778,131,592.67/28,661.25
  6. Step 6: Final answer
    x = 27,149.26

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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.