Home / 38,416.20-57,656.70-18,711.60

Finding the Fourth Proportional to 38,416.20, 57,656.70 and 18,711.60

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Solution

The fourth proportional to 38,416.20, 57,656.70 and 18,711.60 is: 28,083.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,416.20 : 57,656.70 = 18,711.60 : x
  2. Step 2: Convert to fraction form
    38,416.20/57,656.70 = 18,711.60/x
  3. Step 3: Cross multiply
    38,416.20x = 57,656.70 × 18,711.60
  4. Step 4: Simplify right side
    38,416.20x = 1,078,849,107.72
  5. Step 5: Solve for x
    x = 1,078,849,107.72/38,416.20
  6. Step 6: Final answer
    x = 28,083.18

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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.