Home / 30,155.21-45,232.94-12,612.74

Finding the Fourth Proportional to 30,155.21, 45,232.94 and 12,612.74

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Solution

The fourth proportional to 30,155.21, 45,232.94 and 12,612.74 is: 18,919.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,155.21 : 45,232.94 = 12,612.74 : x
  2. Step 2: Convert to fraction form
    30,155.21/45,232.94 = 12,612.74/x
  3. Step 3: Cross multiply
    30,155.21x = 45,232.94 × 12,612.74
  4. Step 4: Simplify right side
    30,155.21x = 570,511,022.43
  5. Step 5: Solve for x
    x = 570,511,022.43/30,155.21
  6. Step 6: Final answer
    x = 18,919.15

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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.