Home / 12,680,538.56-19,021,429.92-5,106,481.28

Finding the Fourth Proportional to 12,680,538.56, 19,021,429.92 and 5,106,481.28

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Solution

The fourth proportional to 12,680,538.56, 19,021,429.92 and 5,106,481.28 is: 7,659,972.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,680,538.56 : 19,021,429.92 = 5,106,481.28 : x
  2. Step 2: Convert to fraction form
    12,680,538.56/19,021,429.92 = 5,106,481.28/x
  3. Step 3: Cross multiply
    12,680,538.56x = 19,021,429.92 × 5,106,481.28
  4. Step 4: Simplify right side
    12,680,538.56x = 97,132,575,805,311.91
  5. Step 5: Solve for x
    x = 97,132,575,805,311.91/12,680,538.56
  6. Step 6: Final answer
    x = 7,659,972.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.