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Finding the Fourth Proportional to 19,793.64, 29,653.20 and 15,389.67

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Solution

The fourth proportional to 19,793.64, 29,653.20 and 15,389.67 is: 23,055.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,793.64 : 29,653.20 = 15,389.67 : x
  2. Step 2: Convert to fraction form
    19,793.64/29,653.20 = 15,389.67/x
  3. Step 3: Cross multiply
    19,793.64x = 29,653.20 × 15,389.67
  4. Step 4: Simplify right side
    19,793.64x = 456,352,962.44
  5. Step 5: Solve for x
    x = 456,352,962.44/19,793.64
  6. Step 6: Final answer
    x = 23,055.54

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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.