Home / 21,582.63-29,781.36-12,628.08

Finding the Fourth Proportional to 21,582.63, 29,781.36 and 12,628.08

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Solution

The fourth proportional to 21,582.63, 29,781.36 and 12,628.08 is: 17,425.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,582.63 : 29,781.36 = 12,628.08 : x
  2. Step 2: Convert to fraction form
    21,582.63/29,781.36 = 12,628.08/x
  3. Step 3: Cross multiply
    21,582.63x = 29,781.36 × 12,628.08
  4. Step 4: Simplify right side
    21,582.63x = 376,081,396.59
  5. Step 5: Solve for x
    x = 376,081,396.59/21,582.63
  6. Step 6: Final answer
    x = 17,425.19

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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.