Home / 30,550.99-42,161.80-19,072.70

Finding the Fourth Proportional to 30,550.99, 42,161.80 and 19,072.70

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Solution

The fourth proportional to 30,550.99, 42,161.80 and 19,072.70 is: 26,321.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,550.99 : 42,161.80 = 19,072.70 : x
  2. Step 2: Convert to fraction form
    30,550.99/42,161.80 = 19,072.70/x
  3. Step 3: Cross multiply
    30,550.99x = 42,161.80 × 19,072.70
  4. Step 4: Simplify right side
    30,550.99x = 804,139,420.58
  5. Step 5: Solve for x
    x = 804,139,420.58/30,550.99
  6. Step 6: Final answer
    x = 26,321.23

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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.