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Finding the Fourth Proportional to 17,387,987.60, 26,081,981.40 and 11,005,446.80

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Solution

The fourth proportional to 17,387,987.60, 26,081,981.40 and 11,005,446.80 is: 16,508,170.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,387,987.60 : 26,081,981.40 = 11,005,446.80 : x
  2. Step 2: Convert to fraction form
    17,387,987.60/26,081,981.40 = 11,005,446.80/x
  3. Step 3: Cross multiply
    17,387,987.60x = 26,081,981.40 × 11,005,446.80
  4. Step 4: Simplify right side
    17,387,987.60x = 287,043,858,736,289.50
  5. Step 5: Solve for x
    x = 287,043,858,736,289.50/17,387,987.60
  6. Step 6: Final answer
    x = 16,508,170.20

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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.