Home / 38,518.20-57,715.20-21,828.60

Finding the Fourth Proportional to 38,518.20, 57,715.20 and 21,828.60

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Solution

The fourth proportional to 38,518.20, 57,715.20 and 21,828.60 is: 32,707.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,518.20 : 57,715.20 = 21,828.60 : x
  2. Step 2: Convert to fraction form
    38,518.20/57,715.20 = 21,828.60/x
  3. Step 3: Cross multiply
    38,518.20x = 57,715.20 × 21,828.60
  4. Step 4: Simplify right side
    38,518.20x = 1,259,842,014.72
  5. Step 5: Solve for x
    x = 1,259,842,014.72/38,518.20
  6. Step 6: Final answer
    x = 32,707.71

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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.