Home / 21,002,668.80-31,504,003.20-17,867,385.60

Finding the Fourth Proportional to 21,002,668.80, 31,504,003.20 and 17,867,385.60

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Solution

The fourth proportional to 21,002,668.80, 31,504,003.20 and 17,867,385.60 is: 26,801,078.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002,668.80 : 31,504,003.20 = 17,867,385.60 : x
  2. Step 2: Convert to fraction form
    21,002,668.80/31,504,003.20 = 17,867,385.60/x
  3. Step 3: Cross multiply
    21,002,668.80x = 31,504,003.20 × 17,867,385.60
  4. Step 4: Simplify right side
    21,002,668.80x = 562,894,173,118,033.94
  5. Step 5: Solve for x
    x = 562,894,173,118,033.94/21,002,668.80
  6. Step 6: Final answer
    x = 26,801,078.40

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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.