Home / 21,383.04-29,645.40-20,203.68

Finding the Fourth Proportional to 21,383.04, 29,645.40 and 20,203.68

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Solution

The fourth proportional to 21,383.04, 29,645.40 and 20,203.68 is: 28,010.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,383.04 : 29,645.40 = 20,203.68 : x
  2. Step 2: Convert to fraction form
    21,383.04/29,645.40 = 20,203.68/x
  3. Step 3: Cross multiply
    21,383.04x = 29,645.40 × 20,203.68
  4. Step 4: Simplify right side
    21,383.04x = 598,946,175.07
  5. Step 5: Solve for x
    x = 598,946,175.07/21,383.04
  6. Step 6: Final answer
    x = 28,010.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.