Home / 21,816.96-30,125.16-17,784.42

Finding the Fourth Proportional to 21,816.96, 30,125.16 and 17,784.42

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Solution

The fourth proportional to 21,816.96, 30,125.16 and 17,784.42 is: 24,556.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,816.96 : 30,125.16 = 17,784.42 : x
  2. Step 2: Convert to fraction form
    21,816.96/30,125.16 = 17,784.42/x
  3. Step 3: Cross multiply
    21,816.96x = 30,125.16 × 17,784.42
  4. Step 4: Simplify right side
    21,816.96x = 535,758,498.01
  5. Step 5: Solve for x
    x = 535,758,498.01/21,816.96
  6. Step 6: Final answer
    x = 24,556.97

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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.