Home / 30,913.52-42,660.78-16,766.60

Finding the Fourth Proportional to 30,913.52, 42,660.78 and 16,766.60

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Solution

The fourth proportional to 30,913.52, 42,660.78 and 16,766.60 is: 23,137.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,913.52 : 42,660.78 = 16,766.60 : x
  2. Step 2: Convert to fraction form
    30,913.52/42,660.78 = 16,766.60/x
  3. Step 3: Cross multiply
    30,913.52x = 42,660.78 × 16,766.60
  4. Step 4: Simplify right side
    30,913.52x = 715,276,233.95
  5. Step 5: Solve for x
    x = 715,276,233.95/30,913.52
  6. Step 6: Final answer
    x = 23,137.97

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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.