Home / 38,520.72-57,774.48-12,219.60

Finding the Fourth Proportional to 38,520.72, 57,774.48 and 12,219.60

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Solution

The fourth proportional to 38,520.72, 57,774.48 and 12,219.60 is: 18,327.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,520.72 : 57,774.48 = 12,219.60 : x
  2. Step 2: Convert to fraction form
    38,520.72/57,774.48 = 12,219.60/x
  3. Step 3: Cross multiply
    38,520.72x = 57,774.48 × 12,219.60
  4. Step 4: Simplify right side
    38,520.72x = 705,981,035.81
  5. Step 5: Solve for x
    x = 705,981,035.81/38,520.72
  6. Step 6: Final answer
    x = 18,327.31

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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.