Home / 19,998.16-27,608-12,928.60

Finding the Fourth Proportional to 19,998.16, 27,608 and 12,928.60

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Solution

The fourth proportional to 19,998.16, 27,608 and 12,928.60 is: 17,848.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,998.16 : 27,608 = 12,928.60 : x
  2. Step 2: Convert to fraction form
    19,998.16/27,608 = 12,928.60/x
  3. Step 3: Cross multiply
    19,998.16x = 27,608 × 12,928.60
  4. Step 4: Simplify right side
    19,998.16x = 356,932,788.80
  5. Step 5: Solve for x
    x = 356,932,788.80/19,998.16
  6. Step 6: Final answer
    x = 17,848.28

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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.