Home / 21,871.20-32,781.94-19,233.56

Finding the Fourth Proportional to 21,871.20, 32,781.94 and 19,233.56

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Solution

The fourth proportional to 21,871.20, 32,781.94 and 19,233.56 is: 28,828.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,871.20 : 32,781.94 = 19,233.56 : x
  2. Step 2: Convert to fraction form
    21,871.20/32,781.94 = 19,233.56/x
  3. Step 3: Cross multiply
    21,871.20x = 32,781.94 × 19,233.56
  4. Step 4: Simplify right side
    21,871.20x = 630,513,409.91
  5. Step 5: Solve for x
    x = 630,513,409.91/21,871.20
  6. Step 6: Final answer
    x = 28,828.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.