Home / 21,788.88-32,686.56-10,103.28

Finding the Fourth Proportional to 21,788.88, 32,686.56 and 10,103.28

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Solution

The fourth proportional to 21,788.88, 32,686.56 and 10,103.28 is: 15,156.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,788.88 : 32,686.56 = 10,103.28 : x
  2. Step 2: Convert to fraction form
    21,788.88/32,686.56 = 10,103.28/x
  3. Step 3: Cross multiply
    21,788.88x = 32,686.56 × 10,103.28
  4. Step 4: Simplify right side
    21,788.88x = 330,241,467.92
  5. Step 5: Solve for x
    x = 330,241,467.92/21,788.88
  6. Step 6: Final answer
    x = 15,156.42

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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.