Home / 20,364,142.72-28,102,488.96-11,665,131.52

Finding the Fourth Proportional to 20,364,142.72, 28,102,488.96 and 11,665,131.52

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Solution

The fourth proportional to 20,364,142.72, 28,102,488.96 and 11,665,131.52 is: 16,097,865.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,364,142.72 : 28,102,488.96 = 11,665,131.52 : x
  2. Step 2: Convert to fraction form
    20,364,142.72/28,102,488.96 = 11,665,131.52/x
  3. Step 3: Cross multiply
    20,364,142.72x = 28,102,488.96 × 11,665,131.52
  4. Step 4: Simplify right side
    20,364,142.72x = 327,819,229,757,748
  5. Step 5: Solve for x
    x = 327,819,229,757,748/20,364,142.72
  6. Step 6: Final answer
    x = 16,097,865.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.