Home / 30,571.40-42,170.62-19,222.91

Finding the Fourth Proportional to 30,571.40, 42,170.62 and 19,222.91

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Solution

The fourth proportional to 30,571.40, 42,170.62 and 19,222.91 is: 26,516.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,571.40 : 42,170.62 = 19,222.91 : x
  2. Step 2: Convert to fraction form
    30,571.40/42,170.62 = 19,222.91/x
  3. Step 3: Cross multiply
    30,571.40x = 42,170.62 × 19,222.91
  4. Step 4: Simplify right side
    30,571.40x = 810,642,090.27
  5. Step 5: Solve for x
    x = 810,642,090.27/30,571.40
  6. Step 6: Final answer
    x = 26,516.35

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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.