Home / 20,956,672.89-28,916,779.14-12,132,980.82

Finding the Fourth Proportional to 20,956,672.89, 28,916,779.14 and 12,132,980.82

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Solution

The fourth proportional to 20,956,672.89, 28,916,779.14 and 12,132,980.82 is: 16,741,528.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956,672.89 : 28,916,779.14 = 12,132,980.82 : x
  2. Step 2: Convert to fraction form
    20,956,672.89/28,916,779.14 = 12,132,980.82/x
  3. Step 3: Cross multiply
    20,956,672.89x = 28,916,779.14 × 12,132,980.82
  4. Step 4: Simplify right side
    20,956,672.89x = 350,846,726,681,796.12
  5. Step 5: Solve for x
    x = 350,846,726,681,796.12/20,956,672.89
  6. Step 6: Final answer
    x = 16,741,528.03

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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.