Home / 12,015.74-17,916.09-11,999.34

Finding the Fourth Proportional to 12,015.74, 17,916.09 and 11,999.34

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Solution

The fourth proportional to 12,015.74, 17,916.09 and 11,999.34 is: 17,891.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.74 : 17,916.09 = 11,999.34 : x
  2. Step 2: Convert to fraction form
    12,015.74/17,916.09 = 11,999.34/x
  3. Step 3: Cross multiply
    12,015.74x = 17,916.09 × 11,999.34
  4. Step 4: Simplify right side
    12,015.74x = 214,981,210.38
  5. Step 5: Solve for x
    x = 214,981,210.38/12,015.74
  6. Step 6: Final answer
    x = 17,891.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.