Home / 21,072.26-29,083.12-12,574.82

Finding the Fourth Proportional to 21,072.26, 29,083.12 and 12,574.82

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Solution

The fourth proportional to 21,072.26, 29,083.12 and 12,574.82 is: 17,355.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.26 : 29,083.12 = 12,574.82 : x
  2. Step 2: Convert to fraction form
    21,072.26/29,083.12 = 12,574.82/x
  3. Step 3: Cross multiply
    21,072.26x = 29,083.12 × 12,574.82
  4. Step 4: Simplify right side
    21,072.26x = 365,714,999.04
  5. Step 5: Solve for x
    x = 365,714,999.04/21,072.26
  6. Step 6: Final answer
    x = 17,355.28

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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.