Home / 12,451,504.70-18,677,257.05-7,643,603.90

Finding the Fourth Proportional to 12,451,504.70, 18,677,257.05 and 7,643,603.90

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Solution

The fourth proportional to 12,451,504.70, 18,677,257.05 and 7,643,603.90 is: 11,465,405.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,451,504.70 : 18,677,257.05 = 7,643,603.90 : x
  2. Step 2: Convert to fraction form
    12,451,504.70/18,677,257.05 = 7,643,603.90/x
  3. Step 3: Cross multiply
    12,451,504.70x = 18,677,257.05 × 7,643,603.90
  4. Step 4: Simplify right side
    12,451,504.70x = 142,761,554,828,682.50
  5. Step 5: Solve for x
    x = 142,761,554,828,682.50/12,451,504.70
  6. Step 6: Final answer
    x = 11,465,405.85

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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.