Home / 21,217,696.72-29,285,578.28-12,964,708.64

Finding the Fourth Proportional to 21,217,696.72, 29,285,578.28 and 12,964,708.64

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Solution

The fourth proportional to 21,217,696.72, 29,285,578.28 and 12,964,708.64 is: 17,894,448.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217,696.72 : 29,285,578.28 = 12,964,708.64 : x
  2. Step 2: Convert to fraction form
    21,217,696.72/29,285,578.28 = 12,964,708.64/x
  3. Step 3: Cross multiply
    21,217,696.72x = 29,285,578.28 × 12,964,708.64
  4. Step 4: Simplify right side
    21,217,696.72x = 379,678,989,754,112.38
  5. Step 5: Solve for x
    x = 379,678,989,754,112.38/21,217,696.72
  6. Step 6: Final answer
    x = 17,894,448.90

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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.