Home / 20,281.08-30,408.60-8,443.05

Finding the Fourth Proportional to 20,281.08, 30,408.60 and 8,443.05

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Solution

The fourth proportional to 20,281.08, 30,408.60 and 8,443.05 is: 12,659.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.08 : 30,408.60 = 8,443.05 : x
  2. Step 2: Convert to fraction form
    20,281.08/30,408.60 = 8,443.05/x
  3. Step 3: Cross multiply
    20,281.08x = 30,408.60 × 8,443.05
  4. Step 4: Simplify right side
    20,281.08x = 256,741,330.23
  5. Step 5: Solve for x
    x = 256,741,330.23/20,281.08
  6. Step 6: Final answer
    x = 12,659.15

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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.