Home / 28,496,499.75-42,744,749.63-12,540,147.75

Finding the Fourth Proportional to 28,496,499.75, 42,744,749.63 and 12,540,147.75

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Solution

The fourth proportional to 28,496,499.75, 42,744,749.63 and 12,540,147.75 is: 18,810,221.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,496,499.75 : 42,744,749.63 = 12,540,147.75 : x
  2. Step 2: Convert to fraction form
    28,496,499.75/42,744,749.63 = 12,540,147.75/x
  3. Step 3: Cross multiply
    28,496,499.75x = 42,744,749.63 × 12,540,147.75
  4. Step 4: Simplify right side
    28,496,499.75x = 536,025,475,834,257.12
  5. Step 5: Solve for x
    x = 536,025,475,834,257.12/28,496,499.75
  6. Step 6: Final answer
    x = 18,810,221.63

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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.