Home / 30,807.03-42,524.60-18,231.75

Finding the Fourth Proportional to 30,807.03, 42,524.60 and 18,231.75

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Solution

The fourth proportional to 30,807.03, 42,524.60 and 18,231.75 is: 25,166.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,807.03 : 42,524.60 = 18,231.75 : x
  2. Step 2: Convert to fraction form
    30,807.03/42,524.60 = 18,231.75/x
  3. Step 3: Cross multiply
    30,807.03x = 42,524.60 × 18,231.75
  4. Step 4: Simplify right side
    30,807.03x = 775,297,784.89
  5. Step 5: Solve for x
    x = 775,297,784.89/30,807.03
  6. Step 6: Final answer
    x = 25,166.26

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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.