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Finding the Fourth Proportional to 11,662,981.20, 17,494,471.80 and 7,421,950.80

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Solution

The fourth proportional to 11,662,981.20, 17,494,471.80 and 7,421,950.80 is: 11,132,926.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,662,981.20 : 17,494,471.80 = 7,421,950.80 : x
  2. Step 2: Convert to fraction form
    11,662,981.20/17,494,471.80 = 7,421,950.80/x
  3. Step 3: Cross multiply
    11,662,981.20x = 17,494,471.80 × 7,421,950.80
  4. Step 4: Simplify right side
    11,662,981.20x = 129,843,108,971,587.44
  5. Step 5: Solve for x
    x = 129,843,108,971,587.44/11,662,981.20
  6. Step 6: Final answer
    x = 11,132,926.20

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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.