Home / 15,775,977-21,770,276.44-9,898,779.28

Finding the Fourth Proportional to 15,775,977, 21,770,276.44 and 9,898,779.28

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Solution

The fourth proportional to 15,775,977, 21,770,276.44 and 9,898,779.28 is: 13,659,956.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,775,977 : 21,770,276.44 = 9,898,779.28 : x
  2. Step 2: Convert to fraction form
    15,775,977/21,770,276.44 = 9,898,779.28/x
  3. Step 3: Cross multiply
    15,775,977x = 21,770,276.44 × 9,898,779.28
  4. Step 4: Simplify right side
    15,775,977x = 215,499,161,344,144.16
  5. Step 5: Solve for x
    x = 215,499,161,344,144.16/15,775,977
  6. Step 6: Final answer
    x = 13,659,956.61

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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.