Home / 21,619.64-29,842.54-12,670.04

Finding the Fourth Proportional to 21,619.64, 29,842.54 and 12,670.04

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Solution

The fourth proportional to 21,619.64, 29,842.54 and 12,670.04 is: 17,489.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,619.64 : 29,842.54 = 12,670.04 : x
  2. Step 2: Convert to fraction form
    21,619.64/29,842.54 = 12,670.04/x
  3. Step 3: Cross multiply
    21,619.64x = 29,842.54 × 12,670.04
  4. Step 4: Simplify right side
    21,619.64x = 378,106,175.50
  5. Step 5: Solve for x
    x = 378,106,175.50/21,619.64
  6. Step 6: Final answer
    x = 17,489.01

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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.