Home / 12,805,853.55-19,209,791.21-4,286,221.71

Finding the Fourth Proportional to 12,805,853.55, 19,209,791.21 and 4,286,221.71

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Solution

The fourth proportional to 12,805,853.55, 19,209,791.21 and 4,286,221.71 is: 6,429,670.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,805,853.55 : 19,209,791.21 = 4,286,221.71 : x
  2. Step 2: Convert to fraction form
    12,805,853.55/19,209,791.21 = 4,286,221.71/x
  3. Step 3: Cross multiply
    12,805,853.55x = 19,209,791.21 × 4,286,221.71
  4. Step 4: Simplify right side
    12,805,853.55x = 82,337,424,107,438.05
  5. Step 5: Solve for x
    x = 82,337,424,107,438.05/12,805,853.55
  6. Step 6: Final answer
    x = 6,429,670.91

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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.