Home / 30,913.31-42,660.68-16,766.46

Finding the Fourth Proportional to 30,913.31, 42,660.68 and 16,766.46

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Solution

The fourth proportional to 30,913.31, 42,660.68 and 16,766.46 is: 23,137.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,913.31 : 42,660.68 = 16,766.46 : x
  2. Step 2: Convert to fraction form
    30,913.31/42,660.68 = 16,766.46/x
  3. Step 3: Cross multiply
    30,913.31x = 42,660.68 × 16,766.46
  4. Step 4: Simplify right side
    30,913.31x = 715,268,500.96
  5. Step 5: Solve for x
    x = 715,268,500.96/30,913.31
  6. Step 6: Final answer
    x = 23,137.88

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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.