Home / 21,442.88-32,128.79-15,171.81

Finding the Fourth Proportional to 21,442.88, 32,128.79 and 15,171.81

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Solution

The fourth proportional to 21,442.88, 32,128.79 and 15,171.81 is: 22,732.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,442.88 : 32,128.79 = 15,171.81 : x
  2. Step 2: Convert to fraction form
    21,442.88/32,128.79 = 15,171.81/x
  3. Step 3: Cross multiply
    21,442.88x = 32,128.79 × 15,171.81
  4. Step 4: Simplify right side
    21,442.88x = 487,451,821.55
  5. Step 5: Solve for x
    x = 487,451,821.55/21,442.88
  6. Step 6: Final answer
    x = 22,732.58

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1.5x scale

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.