Home / 20,299.08-28,018.26-11,918.28

Finding the Fourth Proportional to 20,299.08, 28,018.26 and 11,918.28

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Solution

The fourth proportional to 20,299.08, 28,018.26 and 11,918.28 is: 16,450.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,299.08 : 28,018.26 = 11,918.28 : x
  2. Step 2: Convert to fraction form
    20,299.08/28,018.26 = 11,918.28/x
  3. Step 3: Cross multiply
    20,299.08x = 28,018.26 × 11,918.28
  4. Step 4: Simplify right side
    20,299.08x = 333,929,467.79
  5. Step 5: Solve for x
    x = 333,929,467.79/20,299.08
  6. Step 6: Final answer
    x = 16,450.47

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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.