Home / 20,629.98-28,492.56-13,943.21

Finding the Fourth Proportional to 20,629.98, 28,492.56 and 13,943.21

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Solution

The fourth proportional to 20,629.98, 28,492.56 and 13,943.21 is: 19,257.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.98 : 28,492.56 = 13,943.21 : x
  2. Step 2: Convert to fraction form
    20,629.98/28,492.56 = 13,943.21/x
  3. Step 3: Cross multiply
    20,629.98x = 28,492.56 × 13,943.21
  4. Step 4: Simplify right side
    20,629.98x = 397,277,605.05
  5. Step 5: Solve for x
    x = 397,277,605.05/20,629.98
  6. Step 6: Final answer
    x = 19,257.29

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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.