Home / 12,631.95-18,947.85-3,747.96

Finding the Fourth Proportional to 12,631.95, 18,947.85 and 3,747.96

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Solution

The fourth proportional to 12,631.95, 18,947.85 and 3,747.96 is: 5,621.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.95 : 18,947.85 = 3,747.96 : x
  2. Step 2: Convert to fraction form
    12,631.95/18,947.85 = 3,747.96/x
  3. Step 3: Cross multiply
    12,631.95x = 18,947.85 × 3,747.96
  4. Step 4: Simplify right side
    12,631.95x = 71,015,783.89
  5. Step 5: Solve for x
    x = 71,015,783.89/12,631.95
  6. Step 6: Final answer
    x = 5,621.92

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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.