Home / 28,443.21-42,630.22-20,125.63

Finding the Fourth Proportional to 28,443.21, 42,630.22 and 20,125.63

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Solution

The fourth proportional to 28,443.21, 42,630.22 and 20,125.63 is: 30,163.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,443.21 : 42,630.22 = 20,125.63 : x
  2. Step 2: Convert to fraction form
    28,443.21/42,630.22 = 20,125.63/x
  3. Step 3: Cross multiply
    28,443.21x = 42,630.22 × 20,125.63
  4. Step 4: Simplify right side
    28,443.21x = 857,960,034.54
  5. Step 5: Solve for x
    x = 857,960,034.54/28,443.21
  6. Step 6: Final answer
    x = 30,163.97

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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.