Home / 21,383.12-29,507.52-11,822.45

Finding the Fourth Proportional to 21,383.12, 29,507.52 and 11,822.45

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Solution

The fourth proportional to 21,383.12, 29,507.52 and 11,822.45 is: 16,314.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,383.12 : 29,507.52 = 11,822.45 : x
  2. Step 2: Convert to fraction form
    21,383.12/29,507.52 = 11,822.45/x
  3. Step 3: Cross multiply
    21,383.12x = 29,507.52 × 11,822.45
  4. Step 4: Simplify right side
    21,383.12x = 348,851,194.48
  5. Step 5: Solve for x
    x = 348,851,194.48/21,383.12
  6. Step 6: Final answer
    x = 16,314.33

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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.