Home / 28,222.20-42,344.10-12,628.62

Finding the Fourth Proportional to 28,222.20, 42,344.10 and 12,628.62

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Solution

The fourth proportional to 28,222.20, 42,344.10 and 12,628.62 is: 18,947.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,222.20 : 42,344.10 = 12,628.62 : x
  2. Step 2: Convert to fraction form
    28,222.20/42,344.10 = 12,628.62/x
  3. Step 3: Cross multiply
    28,222.20x = 42,344.10 × 12,628.62
  4. Step 4: Simplify right side
    28,222.20x = 534,747,548.14
  5. Step 5: Solve for x
    x = 534,747,548.14/28,222.20
  6. Step 6: Final answer
    x = 18,947.76

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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.