Home / 12,784.81-19,149.51-6,197.21

Finding the Fourth Proportional to 12,784.81, 19,149.51 and 6,197.21

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Solution

The fourth proportional to 12,784.81, 19,149.51 and 6,197.21 is: 9,282.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,784.81 : 19,149.51 = 6,197.21 : x
  2. Step 2: Convert to fraction form
    12,784.81/19,149.51 = 6,197.21/x
  3. Step 3: Cross multiply
    12,784.81x = 19,149.51 × 6,197.21
  4. Step 4: Simplify right side
    12,784.81x = 118,673,534.87
  5. Step 5: Solve for x
    x = 118,673,534.87/12,784.81
  6. Step 6: Final answer
    x = 9,282.39

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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.