Home / 28,235.43-42,362.37-20,331.47

Finding the Fourth Proportional to 28,235.43, 42,362.37 and 20,331.47

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Solution

The fourth proportional to 28,235.43, 42,362.37 and 20,331.47 is: 30,503.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,235.43 : 42,362.37 = 20,331.47 : x
  2. Step 2: Convert to fraction form
    28,235.43/42,362.37 = 20,331.47/x
  3. Step 3: Cross multiply
    28,235.43x = 42,362.37 × 20,331.47
  4. Step 4: Simplify right side
    28,235.43x = 861,289,360.69
  5. Step 5: Solve for x
    x = 861,289,360.69/28,235.43
  6. Step 6: Final answer
    x = 30,503.85

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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.