Home / 27,231.36-40,762.16-20,975.20

Finding the Fourth Proportional to 27,231.36, 40,762.16 and 20,975.20

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Solution

The fourth proportional to 27,231.36, 40,762.16 and 20,975.20 is: 31,397.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,231.36 : 40,762.16 = 20,975.20 : x
  2. Step 2: Convert to fraction form
    27,231.36/40,762.16 = 20,975.20/x
  3. Step 3: Cross multiply
    27,231.36x = 40,762.16 × 20,975.20
  4. Step 4: Simplify right side
    27,231.36x = 854,994,458.43
  5. Step 5: Solve for x
    x = 854,994,458.43/27,231.36
  6. Step 6: Final answer
    x = 31,397.42

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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.