Home / 12,797.20-19,199.90-8,121.14

Finding the Fourth Proportional to 12,797.20, 19,199.90 and 8,121.14

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Solution

The fourth proportional to 12,797.20, 19,199.90 and 8,121.14 is: 12,184.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,797.20 : 19,199.90 = 8,121.14 : x
  2. Step 2: Convert to fraction form
    12,797.20/19,199.90 = 8,121.14/x
  3. Step 3: Cross multiply
    12,797.20x = 19,199.90 × 8,121.14
  4. Step 4: Simplify right side
    12,797.20x = 155,925,075.89
  5. Step 5: Solve for x
    x = 155,925,075.89/12,797.20
  6. Step 6: Final answer
    x = 12,184.31

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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.