Home / 30,771.39-42,470.60-18,025.95

Finding the Fourth Proportional to 30,771.39, 42,470.60 and 18,025.95

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Solution

The fourth proportional to 30,771.39, 42,470.60 and 18,025.95 is: 24,879.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,771.39 : 42,470.60 = 18,025.95 : x
  2. Step 2: Convert to fraction form
    30,771.39/42,470.60 = 18,025.95/x
  3. Step 3: Cross multiply
    30,771.39x = 42,470.60 × 18,025.95
  4. Step 4: Simplify right side
    30,771.39x = 765,572,821.94
  5. Step 5: Solve for x
    x = 765,572,821.94/30,771.39
  6. Step 6: Final answer
    x = 24,879.37

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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.