Home / 12,219,109.12-18,328,655.20-3,120,880.52

Finding the Fourth Proportional to 12,219,109.12, 18,328,655.20 and 3,120,880.52

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Solution

The fourth proportional to 12,219,109.12, 18,328,655.20 and 3,120,880.52 is: 4,681,318.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219,109.12 : 18,328,655.20 = 3,120,880.52 : x
  2. Step 2: Convert to fraction form
    12,219,109.12/18,328,655.20 = 3,120,880.52/x
  3. Step 3: Cross multiply
    12,219,109.12x = 18,328,655.20 × 3,120,880.52
  4. Step 4: Simplify right side
    12,219,109.12x = 57,201,542,971,476.70
  5. Step 5: Solve for x
    x = 57,201,542,971,476.70/12,219,109.12
  6. Step 6: Final answer
    x = 4,681,318.61

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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.