Home / 21,862.30-30,174.46-13,902.99

Finding the Fourth Proportional to 21,862.30, 30,174.46 and 13,902.99

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Solution

The fourth proportional to 21,862.30, 30,174.46 and 13,902.99 is: 19,188.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,862.30 : 30,174.46 = 13,902.99 : x
  2. Step 2: Convert to fraction form
    21,862.30/30,174.46 = 13,902.99/x
  3. Step 3: Cross multiply
    21,862.30x = 30,174.46 × 13,902.99
  4. Step 4: Simplify right side
    21,862.30x = 419,514,995.25
  5. Step 5: Solve for x
    x = 419,514,995.25/21,862.30
  6. Step 6: Final answer
    x = 19,188.97

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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.