Home / 18,837,867.72-28,215,604.53-13,356,346.98

Finding the Fourth Proportional to 18,837,867.72, 28,215,604.53 and 13,356,346.98

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Solution

The fourth proportional to 18,837,867.72, 28,215,604.53 and 13,356,346.98 is: 20,005,311.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,837,867.72 : 28,215,604.53 = 13,356,346.98 : x
  2. Step 2: Convert to fraction form
    18,837,867.72/28,215,604.53 = 13,356,346.98/x
  3. Step 3: Cross multiply
    18,837,867.72x = 28,215,604.53 × 13,356,346.98
  4. Step 4: Simplify right side
    18,837,867.72x = 376,857,404,353,139.88
  5. Step 5: Solve for x
    x = 376,857,404,353,139.88/18,837,867.72
  6. Step 6: Final answer
    x = 20,005,311.11

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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.