Home / 30,941.94-42,699.51-18,203.34

Finding the Fourth Proportional to 30,941.94, 42,699.51 and 18,203.34

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Solution

The fourth proportional to 30,941.94, 42,699.51 and 18,203.34 is: 25,120.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,941.94 : 42,699.51 = 18,203.34 : x
  2. Step 2: Convert to fraction form
    30,941.94/42,699.51 = 18,203.34/x
  3. Step 3: Cross multiply
    30,941.94x = 42,699.51 × 18,203.34
  4. Step 4: Simplify right side
    30,941.94x = 777,273,698.36
  5. Step 5: Solve for x
    x = 777,273,698.36/30,941.94
  6. Step 6: Final answer
    x = 25,120.39

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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.