Home / 38,436.06-57,646.80-12,138.60

Finding the Fourth Proportional to 38,436.06, 57,646.80 and 12,138.60

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Solution

The fourth proportional to 38,436.06, 57,646.80 and 12,138.60 is: 18,205.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,436.06 : 57,646.80 = 12,138.60 : x
  2. Step 2: Convert to fraction form
    38,436.06/57,646.80 = 12,138.60/x
  3. Step 3: Cross multiply
    38,436.06x = 57,646.80 × 12,138.60
  4. Step 4: Simplify right side
    38,436.06x = 699,751,446.48
  5. Step 5: Solve for x
    x = 699,751,446.48/38,436.06
  6. Step 6: Final answer
    x = 18,205.60

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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.