Home / 12,119.12-18,178.91-3,798.95

Finding the Fourth Proportional to 12,119.12, 18,178.91 and 3,798.95

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Solution

The fourth proportional to 12,119.12, 18,178.91 and 3,798.95 is: 5,698.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,119.12 : 18,178.91 = 3,798.95 : x
  2. Step 2: Convert to fraction form
    12,119.12/18,178.91 = 3,798.95/x
  3. Step 3: Cross multiply
    12,119.12x = 18,178.91 × 3,798.95
  4. Step 4: Simplify right side
    12,119.12x = 69,060,751.15
  5. Step 5: Solve for x
    x = 69,060,751.15/12,119.12
  6. Step 6: Final answer
    x = 5,698.50

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.