Home / 15,401,808-21,207,021.12-13,679,936.64

Finding the Fourth Proportional to 15,401,808, 21,207,021.12 and 13,679,936.64

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Solution

The fourth proportional to 15,401,808, 21,207,021.12 and 13,679,936.64 is: 18,836,146.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,401,808 : 21,207,021.12 = 13,679,936.64 : x
  2. Step 2: Convert to fraction form
    15,401,808/21,207,021.12 = 13,679,936.64/x
  3. Step 3: Cross multiply
    15,401,808x = 21,207,021.12 × 13,679,936.64
  4. Step 4: Simplify right side
    15,401,808x = 290,110,705,244,741.88
  5. Step 5: Solve for x
    x = 290,110,705,244,741.88/15,401,808
  6. Step 6: Final answer
    x = 18,836,146.07

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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.