Home / 30,975.20-42,745.66-16,827.92

Finding the Fourth Proportional to 30,975.20, 42,745.66 and 16,827.92

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Solution

The fourth proportional to 30,975.20, 42,745.66 and 16,827.92 is: 23,222.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,975.20 : 42,745.66 = 16,827.92 : x
  2. Step 2: Convert to fraction form
    30,975.20/42,745.66 = 16,827.92/x
  3. Step 3: Cross multiply
    30,975.20x = 42,745.66 × 16,827.92
  4. Step 4: Simplify right side
    30,975.20x = 719,320,291.03
  5. Step 5: Solve for x
    x = 719,320,291.03/30,975.20
  6. Step 6: Final answer
    x = 23,222.46

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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.