Home / 21,619.49-29,837.61-12,670.41

Finding the Fourth Proportional to 21,619.49, 29,837.61 and 12,670.41

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Solution

The fourth proportional to 21,619.49, 29,837.61 and 12,670.41 is: 17,486.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,619.49 : 29,837.61 = 12,670.41 : x
  2. Step 2: Convert to fraction form
    21,619.49/29,837.61 = 12,670.41/x
  3. Step 3: Cross multiply
    21,619.49x = 29,837.61 × 12,670.41
  4. Step 4: Simplify right side
    21,619.49x = 378,054,752.12
  5. Step 5: Solve for x
    x = 378,054,752.12/21,619.49
  6. Step 6: Final answer
    x = 17,486.76

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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.