Home / 21,288.54-29,406.87-19,301.34

Finding the Fourth Proportional to 21,288.54, 29,406.87 and 19,301.34

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Solution

The fourth proportional to 21,288.54, 29,406.87 and 19,301.34 is: 26,661.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.54 : 29,406.87 = 19,301.34 : x
  2. Step 2: Convert to fraction form
    21,288.54/29,406.87 = 19,301.34/x
  3. Step 3: Cross multiply
    21,288.54x = 29,406.87 × 19,301.34
  4. Step 4: Simplify right side
    21,288.54x = 567,591,996.21
  5. Step 5: Solve for x
    x = 567,591,996.21/21,288.54
  6. Step 6: Final answer
    x = 26,661.86

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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.