Home / 38,580.28-57,874.66-12,278.86

Finding the Fourth Proportional to 38,580.28, 57,874.66 and 12,278.86

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Solution

The fourth proportional to 38,580.28, 57,874.66 and 12,278.86 is: 18,419.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,580.28 : 57,874.66 = 12,278.86 : x
  2. Step 2: Convert to fraction form
    38,580.28/57,874.66 = 12,278.86/x
  3. Step 3: Cross multiply
    38,580.28x = 57,874.66 × 12,278.86
  4. Step 4: Simplify right side
    38,580.28x = 710,634,847.69
  5. Step 5: Solve for x
    x = 710,634,847.69/38,580.28
  6. Step 6: Final answer
    x = 18,419.64

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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.