Home / 30,621.18-42,260.22-18,692.49

Finding the Fourth Proportional to 30,621.18, 42,260.22 and 18,692.49

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Solution

The fourth proportional to 30,621.18, 42,260.22 and 18,692.49 is: 25,797.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,621.18 : 42,260.22 = 18,692.49 : x
  2. Step 2: Convert to fraction form
    30,621.18/42,260.22 = 18,692.49/x
  3. Step 3: Cross multiply
    30,621.18x = 42,260.22 × 18,692.49
  4. Step 4: Simplify right side
    30,621.18x = 789,948,739.75
  5. Step 5: Solve for x
    x = 789,948,739.75/30,621.18
  6. Step 6: Final answer
    x = 25,797.46

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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.