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Finding the Fourth Proportional to 15,672,215.64, 21,626,471.70 and 8,795,369.10

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Solution

The fourth proportional to 15,672,215.64, 21,626,471.70 and 8,795,369.10 is: 12,136,943.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,672,215.64 : 21,626,471.70 = 8,795,369.10 : x
  2. Step 2: Convert to fraction form
    15,672,215.64/21,626,471.70 = 8,795,369.10/x
  3. Step 3: Cross multiply
    15,672,215.64x = 21,626,471.70 × 8,795,369.10
  4. Step 4: Simplify right side
    15,672,215.64x = 190,212,800,932,204.47
  5. Step 5: Solve for x
    x = 190,212,800,932,204.47/15,672,215.64
  6. Step 6: Final answer
    x = 12,136,943.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.