Home / 21,668,799.78-29,902,752.90-11,879,066.16

Finding the Fourth Proportional to 21,668,799.78, 29,902,752.90 and 11,879,066.16

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Solution

The fourth proportional to 21,668,799.78, 29,902,752.90 and 11,879,066.16 is: 16,393,006.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,668,799.78 : 29,902,752.90 = 11,879,066.16 : x
  2. Step 2: Convert to fraction form
    21,668,799.78/29,902,752.90 = 11,879,066.16/x
  3. Step 3: Cross multiply
    21,668,799.78x = 29,902,752.90 × 11,879,066.16
  4. Step 4: Simplify right side
    21,668,799.78x = 355,216,780,065,231.88
  5. Step 5: Solve for x
    x = 355,216,780,065,231.88/21,668,799.78
  6. Step 6: Final answer
    x = 16,393,006.70

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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.