Home / 21,308.64-29,383.60-14,127.84

Finding the Fourth Proportional to 21,308.64, 29,383.60 and 14,127.84

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Solution

The fourth proportional to 21,308.64, 29,383.60 and 14,127.84 is: 19,481.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.64 : 29,383.60 = 14,127.84 : x
  2. Step 2: Convert to fraction form
    21,308.64/29,383.60 = 14,127.84/x
  3. Step 3: Cross multiply
    21,308.64x = 29,383.60 × 14,127.84
  4. Step 4: Simplify right side
    21,308.64x = 415,126,799.42
  5. Step 5: Solve for x
    x = 415,126,799.42/21,308.64
  6. Step 6: Final answer
    x = 19,481.62

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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.