Home / 28,469.12-42,712.80-12,882.56

Finding the Fourth Proportional to 28,469.12, 42,712.80 and 12,882.56

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Solution

The fourth proportional to 28,469.12, 42,712.80 and 12,882.56 is: 19,327.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,469.12 : 42,712.80 = 12,882.56 : x
  2. Step 2: Convert to fraction form
    28,469.12/42,712.80 = 12,882.56/x
  3. Step 3: Cross multiply
    28,469.12x = 42,712.80 × 12,882.56
  4. Step 4: Simplify right side
    28,469.12x = 550,250,208.77
  5. Step 5: Solve for x
    x = 550,250,208.77/28,469.12
  6. Step 6: Final answer
    x = 19,327.97

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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.