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Finding the Fourth Proportional to 11,978,003.40, 17,967,005.10 and 9,143,651.40

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Solution

The fourth proportional to 11,978,003.40, 17,967,005.10 and 9,143,651.40 is: 13,715,477.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,978,003.40 : 17,967,005.10 = 9,143,651.40 : x
  2. Step 2: Convert to fraction form
    11,978,003.40/17,967,005.10 = 9,143,651.40/x
  3. Step 3: Cross multiply
    11,978,003.40x = 17,967,005.10 × 9,143,651.40
  4. Step 4: Simplify right side
    11,978,003.40x = 164,284,031,336,422.16
  5. Step 5: Solve for x
    x = 164,284,031,336,422.16/11,978,003.40
  6. Step 6: Final answer
    x = 13,715,477.10

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1.5x scale

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.