Home / 30,940.78-42,698.28-16,793.62

Finding the Fourth Proportional to 30,940.78, 42,698.28 and 16,793.62

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Solution

The fourth proportional to 30,940.78, 42,698.28 and 16,793.62 is: 23,175.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,940.78 : 42,698.28 = 16,793.62 : x
  2. Step 2: Convert to fraction form
    30,940.78/42,698.28 = 16,793.62/x
  3. Step 3: Cross multiply
    30,940.78x = 42,698.28 × 16,793.62
  4. Step 4: Simplify right side
    30,940.78x = 717,058,688.97
  5. Step 5: Solve for x
    x = 717,058,688.97/30,940.78
  6. Step 6: Final answer
    x = 23,175.20

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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.