Home / 30,308.85-45,465.72-8,122.05

Finding the Fourth Proportional to 30,308.85, 45,465.72 and 8,122.05

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Solution

The fourth proportional to 30,308.85, 45,465.72 and 8,122.05 is: 12,183.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,308.85 : 45,465.72 = 8,122.05 : x
  2. Step 2: Convert to fraction form
    30,308.85/45,465.72 = 8,122.05/x
  3. Step 3: Cross multiply
    30,308.85x = 45,465.72 × 8,122.05
  4. Step 4: Simplify right side
    30,308.85x = 369,274,851.13
  5. Step 5: Solve for x
    x = 369,274,851.13/30,308.85
  6. Step 6: Final answer
    x = 12,183.73

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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.