Home / 30,571.03-42,170.10-19,222.54

Finding the Fourth Proportional to 30,571.03, 42,170.10 and 19,222.54

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Solution

The fourth proportional to 30,571.03, 42,170.10 and 19,222.54 is: 26,515.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,571.03 : 42,170.10 = 19,222.54 : x
  2. Step 2: Convert to fraction form
    30,571.03/42,170.10 = 19,222.54/x
  3. Step 3: Cross multiply
    30,571.03x = 42,170.10 × 19,222.54
  4. Step 4: Simplify right side
    30,571.03x = 810,616,434.05
  5. Step 5: Solve for x
    x = 810,616,434.05/30,571.03
  6. Step 6: Final answer
    x = 26,515.84

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Double scale
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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.