Home / 21,289,202.79-29,379,111.23-11,499,646.79

Finding the Fourth Proportional to 21,289,202.79, 29,379,111.23 and 11,499,646.79

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Solution

The fourth proportional to 21,289,202.79, 29,379,111.23 and 11,499,646.79 is: 15,869,518.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289,202.79 : 29,379,111.23 = 11,499,646.79 : x
  2. Step 2: Convert to fraction form
    21,289,202.79/29,379,111.23 = 11,499,646.79/x
  3. Step 3: Cross multiply
    21,289,202.79x = 29,379,111.23 × 11,499,646.79
  4. Step 4: Simplify right side
    21,289,202.79x = 337,849,401,944,728.69
  5. Step 5: Solve for x
    x = 337,849,401,944,728.69/21,289,202.79
  6. Step 6: Final answer
    x = 15,869,518.71

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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.