Home / 28,360.38-42,540.66-8,638.86

Finding the Fourth Proportional to 28,360.38, 42,540.66 and 8,638.86

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Solution

The fourth proportional to 28,360.38, 42,540.66 and 8,638.86 is: 12,958.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,360.38 : 42,540.66 = 8,638.86 : x
  2. Step 2: Convert to fraction form
    28,360.38/42,540.66 = 8,638.86/x
  3. Step 3: Cross multiply
    28,360.38x = 42,540.66 × 8,638.86
  4. Step 4: Simplify right side
    28,360.38x = 367,502,806.05
  5. Step 5: Solve for x
    x = 367,502,806.05/28,360.38
  6. Step 6: Final answer
    x = 12,958.32

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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.