Home / 21,008.43-28,991.27-11,448.41

Finding the Fourth Proportional to 21,008.43, 28,991.27 and 11,448.41

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Solution

The fourth proportional to 21,008.43, 28,991.27 and 11,448.41 is: 15,798.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008.43 : 28,991.27 = 11,448.41 : x
  2. Step 2: Convert to fraction form
    21,008.43/28,991.27 = 11,448.41/x
  3. Step 3: Cross multiply
    21,008.43x = 28,991.27 × 11,448.41
  4. Step 4: Simplify right side
    21,008.43x = 331,903,743.18
  5. Step 5: Solve for x
    x = 331,903,743.18/21,008.43
  6. Step 6: Final answer
    x = 15,798.60

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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.