Home / 12,811.74-19,217.61-3,577.50

Finding the Fourth Proportional to 12,811.74, 19,217.61 and 3,577.50

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Solution

The fourth proportional to 12,811.74, 19,217.61 and 3,577.50 is: 5,366.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,811.74 : 19,217.61 = 3,577.50 : x
  2. Step 2: Convert to fraction form
    12,811.74/19,217.61 = 3,577.50/x
  3. Step 3: Cross multiply
    12,811.74x = 19,217.61 × 3,577.50
  4. Step 4: Simplify right side
    12,811.74x = 68,750,999.78
  5. Step 5: Solve for x
    x = 68,750,999.78/12,811.74
  6. Step 6: Final answer
    x = 5,366.25

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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.