Home / 21,076.28-29,090.58-13,902.92

Finding the Fourth Proportional to 21,076.28, 29,090.58 and 13,902.92

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Solution

The fourth proportional to 21,076.28, 29,090.58 and 13,902.92 is: 19,189.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,076.28 : 29,090.58 = 13,902.92 : x
  2. Step 2: Convert to fraction form
    21,076.28/29,090.58 = 13,902.92/x
  3. Step 3: Cross multiply
    21,076.28x = 29,090.58 × 13,902.92
  4. Step 4: Simplify right side
    21,076.28x = 404,444,006.49
  5. Step 5: Solve for x
    x = 404,444,006.49/21,076.28
  6. Step 6: Final answer
    x = 19,189.53

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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.