Home / 19,880.16-29,815.20-8,793.60

Finding the Fourth Proportional to 19,880.16, 29,815.20 and 8,793.60

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Solution

The fourth proportional to 19,880.16, 29,815.20 and 8,793.60 is: 13,188.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.16 : 29,815.20 = 8,793.60 : x
  2. Step 2: Convert to fraction form
    19,880.16/29,815.20 = 8,793.60/x
  3. Step 3: Cross multiply
    19,880.16x = 29,815.20 × 8,793.60
  4. Step 4: Simplify right side
    19,880.16x = 262,182,942.72
  5. Step 5: Solve for x
    x = 262,182,942.72/19,880.16
  6. Step 6: Final answer
    x = 13,188.17

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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.