Home / 38,280.87-57,421.26-20,861.37

Finding the Fourth Proportional to 38,280.87, 57,421.26 and 20,861.37

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Solution

The fourth proportional to 38,280.87, 57,421.26 and 20,861.37 is: 31,292.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,280.87 : 57,421.26 = 20,861.37 : x
  2. Step 2: Convert to fraction form
    38,280.87/57,421.26 = 20,861.37/x
  3. Step 3: Cross multiply
    38,280.87x = 57,421.26 × 20,861.37
  4. Step 4: Simplify right side
    38,280.87x = 1,197,886,150.73
  5. Step 5: Solve for x
    x = 1,197,886,150.73/38,280.87
  6. Step 6: Final answer
    x = 31,292.03

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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.