Home / 38,287.80-57,431.70-12,000.60

Finding the Fourth Proportional to 38,287.80, 57,431.70 and 12,000.60

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Solution

The fourth proportional to 38,287.80, 57,431.70 and 12,000.60 is: 18,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,287.80 : 57,431.70 = 12,000.60 : x
  2. Step 2: Convert to fraction form
    38,287.80/57,431.70 = 12,000.60/x
  3. Step 3: Cross multiply
    38,287.80x = 57,431.70 × 12,000.60
  4. Step 4: Simplify right side
    38,287.80x = 689,214,859.02
  5. Step 5: Solve for x
    x = 689,214,859.02/38,287.80
  6. Step 6: Final answer
    x = 18,000.90

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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.