Home / 12,123.36-16,712.69-8,028.32

Finding the Fourth Proportional to 12,123.36, 16,712.69 and 8,028.32

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Solution

The fourth proportional to 12,123.36, 16,712.69 and 8,028.32 is: 11,067.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123.36 : 16,712.69 = 8,028.32 : x
  2. Step 2: Convert to fraction form
    12,123.36/16,712.69 = 8,028.32/x
  3. Step 3: Cross multiply
    12,123.36x = 16,712.69 × 8,028.32
  4. Step 4: Simplify right side
    12,123.36x = 134,174,699.68
  5. Step 5: Solve for x
    x = 134,174,699.68/12,123.36
  6. Step 6: Final answer
    x = 11,067.45

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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.