Home / 28,800.88-43,167.37-12,987.39

Finding the Fourth Proportional to 28,800.88, 43,167.37 and 12,987.39

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Solution

The fourth proportional to 28,800.88, 43,167.37 and 12,987.39 is: 19,465.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,800.88 : 43,167.37 = 12,987.39 : x
  2. Step 2: Convert to fraction form
    28,800.88/43,167.37 = 12,987.39/x
  3. Step 3: Cross multiply
    28,800.88x = 43,167.37 × 12,987.39
  4. Step 4: Simplify right side
    28,800.88x = 560,631,469.46
  5. Step 5: Solve for x
    x = 560,631,469.46/28,800.88
  6. Step 6: Final answer
    x = 19,465.78

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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.