Home / 12,540,978.70-18,810,554.43-5,626,599.14

Finding the Fourth Proportional to 12,540,978.70, 18,810,554.43 and 5,626,599.14

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Solution

The fourth proportional to 12,540,978.70, 18,810,554.43 and 5,626,599.14 is: 8,439,488.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,540,978.70 : 18,810,554.43 = 5,626,599.14 : x
  2. Step 2: Convert to fraction form
    12,540,978.70/18,810,554.43 = 5,626,599.14/x
  3. Step 3: Cross multiply
    12,540,978.70x = 18,810,554.43 × 5,626,599.14
  4. Step 4: Simplify right side
    12,540,978.70x = 105,839,449,378,761.19
  5. Step 5: Solve for x
    x = 105,839,449,378,761.19/12,540,978.70
  6. Step 6: Final answer
    x = 8,439,488.81

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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.