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Finding the Fourth Proportional to 11,978,227.80, 17,967,341.70 and 8,577,005.40

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Solution

The fourth proportional to 11,978,227.80, 17,967,341.70 and 8,577,005.40 is: 12,865,508.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,978,227.80 : 17,967,341.70 = 8,577,005.40 : x
  2. Step 2: Convert to fraction form
    11,978,227.80/17,967,341.70 = 8,577,005.40/x
  3. Step 3: Cross multiply
    11,978,227.80x = 17,967,341.70 × 8,577,005.40
  4. Step 4: Simplify right side
    11,978,227.80x = 154,105,986,784,545.19
  5. Step 5: Solve for x
    x = 154,105,986,784,545.19/11,978,227.80
  6. Step 6: Final answer
    x = 12,865,508.10

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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.