Home / 30,135.72-45,190.62-12,354.02

Finding the Fourth Proportional to 30,135.72, 45,190.62 and 12,354.02

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Solution

The fourth proportional to 30,135.72, 45,190.62 and 12,354.02 is: 18,525.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,135.72 : 45,190.62 = 12,354.02 : x
  2. Step 2: Convert to fraction form
    30,135.72/45,190.62 = 12,354.02/x
  3. Step 3: Cross multiply
    30,135.72x = 45,190.62 × 12,354.02
  4. Step 4: Simplify right side
    30,135.72x = 558,285,597.34
  5. Step 5: Solve for x
    x = 558,285,597.34/30,135.72
  6. Step 6: Final answer
    x = 18,525.71

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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.