Home / 21,309,128.88-29,409,476.04-12,018,604.80

Finding the Fourth Proportional to 21,309,128.88, 29,409,476.04 and 12,018,604.80

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Solution

The fourth proportional to 21,309,128.88, 29,409,476.04 and 12,018,604.80 is: 16,587,297.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309,128.88 : 29,409,476.04 = 12,018,604.80 : x
  2. Step 2: Convert to fraction form
    21,309,128.88/29,409,476.04 = 12,018,604.80/x
  3. Step 3: Cross multiply
    21,309,128.88x = 29,409,476.04 × 12,018,604.80
  4. Step 4: Simplify right side
    21,309,128.88x = 353,460,869,899,829
  5. Step 5: Solve for x
    x = 353,460,869,899,829/21,309,128.88
  6. Step 6: Final answer
    x = 16,587,297.96

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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.