Home / 21,139,913.39-29,172,584.30-12,438,649.58

Finding the Fourth Proportional to 21,139,913.39, 29,172,584.30 and 12,438,649.58

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Solution

The fourth proportional to 21,139,913.39, 29,172,584.30 and 12,438,649.58 is: 17,165,044.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,139,913.39 : 29,172,584.30 = 12,438,649.58 : x
  2. Step 2: Convert to fraction form
    21,139,913.39/29,172,584.30 = 12,438,649.58/x
  3. Step 3: Cross multiply
    21,139,913.39x = 29,172,584.30 × 12,438,649.58
  4. Step 4: Simplify right side
    21,139,913.39x = 362,867,553,242,653.44
  5. Step 5: Solve for x
    x = 362,867,553,242,653.44/21,139,913.39
  6. Step 6: Final answer
    x = 17,165,044.47

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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.