Home / 19,142.82-28,709.01-12,112.29

Finding the Fourth Proportional to 19,142.82, 28,709.01 and 12,112.29

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Solution

The fourth proportional to 19,142.82, 28,709.01 and 12,112.29 is: 18,165.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,142.82 : 28,709.01 = 12,112.29 : x
  2. Step 2: Convert to fraction form
    19,142.82/28,709.01 = 12,112.29/x
  3. Step 3: Cross multiply
    19,142.82x = 28,709.01 × 12,112.29
  4. Step 4: Simplify right side
    19,142.82x = 347,731,854.73
  5. Step 5: Solve for x
    x = 347,731,854.73/19,142.82
  6. Step 6: Final answer
    x = 18,165.13

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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.