Home / 19,287.75-28,720.86-18,578.37

Finding the Fourth Proportional to 19,287.75, 28,720.86 and 18,578.37

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Solution

The fourth proportional to 19,287.75, 28,720.86 and 18,578.37 is: 27,664.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,287.75 : 28,720.86 = 18,578.37 : x
  2. Step 2: Convert to fraction form
    19,287.75/28,720.86 = 18,578.37/x
  3. Step 3: Cross multiply
    19,287.75x = 28,720.86 × 18,578.37
  4. Step 4: Simplify right side
    19,287.75x = 533,586,763.80
  5. Step 5: Solve for x
    x = 533,586,763.80/19,287.75
  6. Step 6: Final answer
    x = 27,664.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.