Home / 30,571.12-42,172.62-19,966.96

Finding the Fourth Proportional to 30,571.12, 42,172.62 and 19,966.96

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Solution

The fourth proportional to 30,571.12, 42,172.62 and 19,966.96 is: 27,544.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,571.12 : 42,172.62 = 19,966.96 : x
  2. Step 2: Convert to fraction form
    30,571.12/42,172.62 = 19,966.96/x
  3. Step 3: Cross multiply
    30,571.12x = 42,172.62 × 19,966.96
  4. Step 4: Simplify right side
    30,571.12x = 842,059,016.64
  5. Step 5: Solve for x
    x = 842,059,016.64/30,571.12
  6. Step 6: Final answer
    x = 27,544.26

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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.