Home / 30,874.33-42,607.38-18,930.79

Finding the Fourth Proportional to 30,874.33, 42,607.38 and 18,930.79

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Solution

The fourth proportional to 30,874.33, 42,607.38 and 18,930.79 is: 26,124.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,874.33 : 42,607.38 = 18,930.79 : x
  2. Step 2: Convert to fraction form
    30,874.33/42,607.38 = 18,930.79/x
  3. Step 3: Cross multiply
    30,874.33x = 42,607.38 × 18,930.79
  4. Step 4: Simplify right side
    30,874.33x = 806,591,363.23
  5. Step 5: Solve for x
    x = 806,591,363.23/30,874.33
  6. Step 6: Final answer
    x = 26,124.98

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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.