Home / 12,920,992.65-17,831,765.75-7,119,773.37

Finding the Fourth Proportional to 12,920,992.65, 17,831,765.75 and 7,119,773.37

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Solution

The fourth proportional to 12,920,992.65, 17,831,765.75 and 7,119,773.37 is: 9,825,725.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920,992.65 : 17,831,765.75 = 7,119,773.37 : x
  2. Step 2: Convert to fraction form
    12,920,992.65/17,831,765.75 = 7,119,773.37/x
  3. Step 3: Cross multiply
    12,920,992.65x = 17,831,765.75 × 7,119,773.37
  4. Step 4: Simplify right side
    12,920,992.65x = 126,958,130,891,329.22
  5. Step 5: Solve for x
    x = 126,958,130,891,329.22/12,920,992.65
  6. Step 6: Final answer
    x = 9,825,725.80

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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.