Home / 13,998.78-21,005.46-11,018.99

Finding the Fourth Proportional to 13,998.78, 21,005.46 and 11,018.99

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Solution

The fourth proportional to 13,998.78, 21,005.46 and 11,018.99 is: 16,534.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.78 : 21,005.46 = 11,018.99 : x
  2. Step 2: Convert to fraction form
    13,998.78/21,005.46 = 11,018.99/x
  3. Step 3: Cross multiply
    13,998.78x = 21,005.46 × 11,018.99
  4. Step 4: Simplify right side
    13,998.78x = 231,459,006.20
  5. Step 5: Solve for x
    x = 231,459,006.20/13,998.78
  6. Step 6: Final answer
    x = 16,534.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.