Home / 30,320.88-45,487.46-12,790.76

Finding the Fourth Proportional to 30,320.88, 45,487.46 and 12,790.76

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Solution

The fourth proportional to 30,320.88, 45,487.46 and 12,790.76 is: 19,188.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,320.88 : 45,487.46 = 12,790.76 : x
  2. Step 2: Convert to fraction form
    30,320.88/45,487.46 = 12,790.76/x
  3. Step 3: Cross multiply
    30,320.88x = 45,487.46 × 12,790.76
  4. Step 4: Simplify right side
    30,320.88x = 581,819,183.87
  5. Step 5: Solve for x
    x = 581,819,183.87/30,320.88
  6. Step 6: Final answer
    x = 19,188.73

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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.