Home / 21,580,372.80-29,780,566.80-11,790,606.72

Finding the Fourth Proportional to 21,580,372.80, 29,780,566.80 and 11,790,606.72

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Solution

The fourth proportional to 21,580,372.80, 29,780,566.80 and 11,790,606.72 is: 16,270,847.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,580,372.80 : 29,780,566.80 = 11,790,606.72 : x
  2. Step 2: Convert to fraction form
    21,580,372.80/29,780,566.80 = 11,790,606.72/x
  3. Step 3: Cross multiply
    21,580,372.80x = 29,780,566.80 × 11,790,606.72
  4. Step 4: Simplify right side
    21,580,372.80x = 351,130,951,037,488.94
  5. Step 5: Solve for x
    x = 351,130,951,037,488.94/21,580,372.80
  6. Step 6: Final answer
    x = 16,270,847.32

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1.5x scale

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.