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Finding the Fourth Proportional to 18,487,809.10, 27,748,662.90 and 9,396,231.40

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Solution

The fourth proportional to 18,487,809.10, 27,748,662.90 and 9,396,231.40 is: 14,102,961.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,487,809.10 : 27,748,662.90 = 9,396,231.40 : x
  2. Step 2: Convert to fraction form
    18,487,809.10/27,748,662.90 = 9,396,231.40/x
  3. Step 3: Cross multiply
    18,487,809.10x = 27,748,662.90 × 9,396,231.40
  4. Step 4: Simplify right side
    18,487,809.10x = 260,732,857,648,995.06
  5. Step 5: Solve for x
    x = 260,732,857,648,995.06/18,487,809.10
  6. Step 6: Final answer
    x = 14,102,961.38

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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.