Home / 21,843,513-30,144,060.90-12,185,721

Finding the Fourth Proportional to 21,843,513, 30,144,060.90 and 12,185,721

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Solution

The fourth proportional to 21,843,513, 30,144,060.90 and 12,185,721 is: 16,816,302.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,843,513 : 30,144,060.90 = 12,185,721 : x
  2. Step 2: Convert to fraction form
    21,843,513/30,144,060.90 = 12,185,721/x
  3. Step 3: Cross multiply
    21,843,513x = 30,144,060.90 × 12,185,721
  4. Step 4: Simplify right side
    21,843,513x = 367,327,115,934,408.88
  5. Step 5: Solve for x
    x = 367,327,115,934,408.88/21,843,513
  6. Step 6: Final answer
    x = 16,816,302.21

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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.