Home / 20,199.62-27,889.16-12,648.98

Finding the Fourth Proportional to 20,199.62, 27,889.16 and 12,648.98

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Solution

The fourth proportional to 20,199.62, 27,889.16 and 12,648.98 is: 17,464.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,199.62 : 27,889.16 = 12,648.98 : x
  2. Step 2: Convert to fraction form
    20,199.62/27,889.16 = 12,648.98/x
  3. Step 3: Cross multiply
    20,199.62x = 27,889.16 × 12,648.98
  4. Step 4: Simplify right side
    20,199.62x = 352,769,224.37
  5. Step 5: Solve for x
    x = 352,769,224.37/20,199.62
  6. Step 6: Final answer
    x = 17,464.16

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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.