Home / 38,518.60-57,777.90-18,809.80

Finding the Fourth Proportional to 38,518.60, 57,777.90 and 18,809.80

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Solution

The fourth proportional to 38,518.60, 57,777.90 and 18,809.80 is: 28,214.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,518.60 : 57,777.90 = 18,809.80 : x
  2. Step 2: Convert to fraction form
    38,518.60/57,777.90 = 18,809.80/x
  3. Step 3: Cross multiply
    38,518.60x = 57,777.90 × 18,809.80
  4. Step 4: Simplify right side
    38,518.60x = 1,086,790,743.42
  5. Step 5: Solve for x
    x = 1,086,790,743.42/38,518.60
  6. Step 6: Final answer
    x = 28,214.70

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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.