Home / 19,971.36-27,557.82-12,015.54

Finding the Fourth Proportional to 19,971.36, 27,557.82 and 12,015.54

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Solution

The fourth proportional to 19,971.36, 27,557.82 and 12,015.54 is: 16,579.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,971.36 : 27,557.82 = 12,015.54 : x
  2. Step 2: Convert to fraction form
    19,971.36/27,557.82 = 12,015.54/x
  3. Step 3: Cross multiply
    19,971.36x = 27,557.82 × 12,015.54
  4. Step 4: Simplify right side
    19,971.36x = 331,122,088.52
  5. Step 5: Solve for x
    x = 331,122,088.52/19,971.36
  6. Step 6: Final answer
    x = 16,579.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.