Home / 30,169.95-41,647.11-18,230.30

Finding the Fourth Proportional to 30,169.95, 41,647.11 and 18,230.30

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Solution

The fourth proportional to 30,169.95, 41,647.11 and 18,230.30 is: 25,165.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,169.95 : 41,647.11 = 18,230.30 : x
  2. Step 2: Convert to fraction form
    30,169.95/41,647.11 = 18,230.30/x
  3. Step 3: Cross multiply
    30,169.95x = 41,647.11 × 18,230.30
  4. Step 4: Simplify right side
    30,169.95x = 759,239,101.20
  5. Step 5: Solve for x
    x = 759,239,101.20/30,169.95
  6. Step 6: Final answer
    x = 25,165.41

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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.