Home / 30,975.30-42,745.97-16,828.16

Finding the Fourth Proportional to 30,975.30, 42,745.97 and 16,828.16

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Solution

The fourth proportional to 30,975.30, 42,745.97 and 16,828.16 is: 23,222.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,975.30 : 42,745.97 = 16,828.16 : x
  2. Step 2: Convert to fraction form
    30,975.30/42,745.97 = 16,828.16/x
  3. Step 3: Cross multiply
    30,975.30x = 42,745.97 × 16,828.16
  4. Step 4: Simplify right side
    30,975.30x = 719,335,724.64
  5. Step 5: Solve for x
    x = 719,335,724.64/30,975.30
  6. Step 6: Final answer
    x = 23,222.88

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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.