Home / 21,021,008.91-29,009,370.15-12,321,647.79

Finding the Fourth Proportional to 21,021,008.91, 29,009,370.15 and 12,321,647.79

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Solution

The fourth proportional to 21,021,008.91, 29,009,370.15 and 12,321,647.79 is: 17,004,095.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021,008.91 : 29,009,370.15 = 12,321,647.79 : x
  2. Step 2: Convert to fraction form
    21,021,008.91/29,009,370.15 = 12,321,647.79/x
  3. Step 3: Cross multiply
    21,021,008.91x = 29,009,370.15 × 12,321,647.79
  4. Step 4: Simplify right side
    21,021,008.91x = 357,443,241,598,039.44
  5. Step 5: Solve for x
    x = 357,443,241,598,039.44/21,021,008.91
  6. Step 6: Final answer
    x = 17,004,095.43

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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.