Home / 19,815.28-29,704.31-6,658.45

Finding the Fourth Proportional to 19,815.28, 29,704.31 and 6,658.45

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Solution

The fourth proportional to 19,815.28, 29,704.31 and 6,658.45 is: 9,981.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,815.28 : 29,704.31 = 6,658.45 : x
  2. Step 2: Convert to fraction form
    19,815.28/29,704.31 = 6,658.45/x
  3. Step 3: Cross multiply
    19,815.28x = 29,704.31 × 6,658.45
  4. Step 4: Simplify right side
    19,815.28x = 197,784,481.11
  5. Step 5: Solve for x
    x = 197,784,481.11/19,815.28
  6. Step 6: Final answer
    x = 9,981.41

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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.