Home / 21,427,231.82-29,564,979.63-12,728,337.26

Finding the Fourth Proportional to 21,427,231.82, 29,564,979.63 and 12,728,337.26

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Solution

The fourth proportional to 21,427,231.82, 29,564,979.63 and 12,728,337.26 is: 17,562,372.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427,231.82 : 29,564,979.63 = 12,728,337.26 : x
  2. Step 2: Convert to fraction form
    21,427,231.82/29,564,979.63 = 12,728,337.26/x
  3. Step 3: Cross multiply
    21,427,231.82x = 29,564,979.63 × 12,728,337.26
  4. Step 4: Simplify right side
    21,427,231.82x = 376,313,031,815,670
  5. Step 5: Solve for x
    x = 376,313,031,815,670/21,427,231.82
  6. Step 6: Final answer
    x = 17,562,372.73

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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.