Home / 21,231,421.69-31,856,354.57-11,522,893.72

Finding the Fourth Proportional to 21,231,421.69, 31,856,354.57 and 11,522,893.72

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Solution

The fourth proportional to 21,231,421.69, 31,856,354.57 and 11,522,893.72 is: 17,289,345.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,231,421.69 : 31,856,354.57 = 11,522,893.72 : x
  2. Step 2: Convert to fraction form
    21,231,421.69/31,856,354.57 = 11,522,893.72/x
  3. Step 3: Cross multiply
    21,231,421.69x = 31,856,354.57 × 11,522,893.72
  4. Step 4: Simplify right side
    21,231,421.69x = 367,077,388,016,746.31
  5. Step 5: Solve for x
    x = 367,077,388,016,746.31/21,231,421.69
  6. Step 6: Final answer
    x = 17,289,345.64

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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.