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Finding the Fourth Proportional to 30,249.80, 45,374.70 and 15,453.80

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Solution

The fourth proportional to 30,249.80, 45,374.70 and 15,453.80 is: 23,180.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,249.80 : 45,374.70 = 15,453.80 : x
  2. Step 2: Convert to fraction form
    30,249.80/45,374.70 = 15,453.80/x
  3. Step 3: Cross multiply
    30,249.80x = 45,374.70 × 15,453.80
  4. Step 4: Simplify right side
    30,249.80x = 701,211,538.86
  5. Step 5: Solve for x
    x = 701,211,538.86/30,249.80
  6. Step 6: Final answer
    x = 23,180.70

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1.5x scale

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.