Home / 12,715.42-19,074.36-3,947.98

Finding the Fourth Proportional to 12,715.42, 19,074.36 and 3,947.98

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Solution

The fourth proportional to 12,715.42, 19,074.36 and 3,947.98 is: 5,922.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,715.42 : 19,074.36 = 3,947.98 : x
  2. Step 2: Convert to fraction form
    12,715.42/19,074.36 = 3,947.98/x
  3. Step 3: Cross multiply
    12,715.42x = 19,074.36 × 3,947.98
  4. Step 4: Simplify right side
    12,715.42x = 75,305,191.79
  5. Step 5: Solve for x
    x = 75,305,191.79/12,715.42
  6. Step 6: Final answer
    x = 5,922.35

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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.