Home / 21,508,779.96-29,675,748.78-12,799,971

Finding the Fourth Proportional to 21,508,779.96, 29,675,748.78 and 12,799,971

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Solution

The fourth proportional to 21,508,779.96, 29,675,748.78 and 12,799,971 is: 17,660,170.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,508,779.96 : 29,675,748.78 = 12,799,971 : x
  2. Step 2: Convert to fraction form
    21,508,779.96/29,675,748.78 = 12,799,971/x
  3. Step 3: Cross multiply
    21,508,779.96x = 29,675,748.78 × 12,799,971
  4. Step 4: Simplify right side
    21,508,779.96x = 379,848,723,787,285.38
  5. Step 5: Solve for x
    x = 379,848,723,787,285.38/21,508,779.96
  6. Step 6: Final answer
    x = 17,660,170.61

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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.