Home / 21,120,172.32-29,145,849.72-11,462,380.32

Finding the Fourth Proportional to 21,120,172.32, 29,145,849.72 and 11,462,380.32

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Solution

The fourth proportional to 21,120,172.32, 29,145,849.72 and 11,462,380.32 is: 15,818,091.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,120,172.32 : 29,145,849.72 = 11,462,380.32 : x
  2. Step 2: Convert to fraction form
    21,120,172.32/29,145,849.72 = 11,462,380.32/x
  3. Step 3: Cross multiply
    21,120,172.32x = 29,145,849.72 × 11,462,380.32
  4. Step 4: Simplify right side
    21,120,172.32x = 334,080,814,240,205.50
  5. Step 5: Solve for x
    x = 334,080,814,240,205.50/21,120,172.32
  6. Step 6: Final answer
    x = 15,818,091.31

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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.