Home / 21,692,837.62-29,933,935.52-12,990,786.49

Finding the Fourth Proportional to 21,692,837.62, 29,933,935.52 and 12,990,786.49

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Solution

The fourth proportional to 21,692,837.62, 29,933,935.52 and 12,990,786.49 is: 17,925,979.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,692,837.62 : 29,933,935.52 = 12,990,786.49 : x
  2. Step 2: Convert to fraction form
    21,692,837.62/29,933,935.52 = 12,990,786.49/x
  3. Step 3: Cross multiply
    21,692,837.62x = 29,933,935.52 × 12,990,786.49
  4. Step 4: Simplify right side
    21,692,837.62x = 388,865,364,996,077.44
  5. Step 5: Solve for x
    x = 388,865,364,996,077.44/21,692,837.62
  6. Step 6: Final answer
    x = 17,925,979.62

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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.