Home / 12,687.90-19,032.39-3,922.98

Finding the Fourth Proportional to 12,687.90, 19,032.39 and 3,922.98

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Solution

The fourth proportional to 12,687.90, 19,032.39 and 3,922.98 is: 5,884.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687.90 : 19,032.39 = 3,922.98 : x
  2. Step 2: Convert to fraction form
    12,687.90/19,032.39 = 3,922.98/x
  3. Step 3: Cross multiply
    12,687.90x = 19,032.39 × 3,922.98
  4. Step 4: Simplify right side
    12,687.90x = 74,663,685.32
  5. Step 5: Solve for x
    x = 74,663,685.32/12,687.90
  6. Step 6: Final answer
    x = 5,884.64

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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.