Home / 12,405,796.40-17,120,008.79-6,899,051.09

Finding the Fourth Proportional to 12,405,796.40, 17,120,008.79 and 6,899,051.09

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Solution

The fourth proportional to 12,405,796.40, 17,120,008.79 and 6,899,051.09 is: 9,520,695.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,405,796.40 : 17,120,008.79 = 6,899,051.09 : x
  2. Step 2: Convert to fraction form
    12,405,796.40/17,120,008.79 = 6,899,051.09/x
  3. Step 3: Cross multiply
    12,405,796.40x = 17,120,008.79 × 6,899,051.09
  4. Step 4: Simplify right side
    12,405,796.40x = 118,111,815,183,363.78
  5. Step 5: Solve for x
    x = 118,111,815,183,363.78/12,405,796.40
  6. Step 6: Final answer
    x = 9,520,695.92

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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.