Home / 38,409.20-57,646.20-18,704.60

Finding the Fourth Proportional to 38,409.20, 57,646.20 and 18,704.60

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Solution

The fourth proportional to 38,409.20, 57,646.20 and 18,704.60 is: 28,072.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,409.20 : 57,646.20 = 18,704.60 : x
  2. Step 2: Convert to fraction form
    38,409.20/57,646.20 = 18,704.60/x
  3. Step 3: Cross multiply
    38,409.20x = 57,646.20 × 18,704.60
  4. Step 4: Simplify right side
    38,409.20x = 1,078,249,112.52
  5. Step 5: Solve for x
    x = 1,078,249,112.52/38,409.20
  6. Step 6: Final answer
    x = 28,072.68

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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.