Home / 21,489.89-29,648.44-14,042.21

Finding the Fourth Proportional to 21,489.89, 29,648.44 and 14,042.21

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Solution

The fourth proportional to 21,489.89, 29,648.44 and 14,042.21 is: 19,373.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,489.89 : 29,648.44 = 14,042.21 : x
  2. Step 2: Convert to fraction form
    21,489.89/29,648.44 = 14,042.21/x
  3. Step 3: Cross multiply
    21,489.89x = 29,648.44 × 14,042.21
  4. Step 4: Simplify right side
    21,489.89x = 416,329,620.65
  5. Step 5: Solve for x
    x = 416,329,620.65/21,489.89
  6. Step 6: Final answer
    x = 19,373.28

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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.