Home / 28,262.92-42,394.38-20,520.94

Finding the Fourth Proportional to 28,262.92, 42,394.38 and 20,520.94

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Solution

The fourth proportional to 28,262.92, 42,394.38 and 20,520.94 is: 30,781.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,262.92 : 42,394.38 = 20,520.94 : x
  2. Step 2: Convert to fraction form
    28,262.92/42,394.38 = 20,520.94/x
  3. Step 3: Cross multiply
    28,262.92x = 42,394.38 × 20,520.94
  4. Step 4: Simplify right side
    28,262.92x = 869,972,528.32
  5. Step 5: Solve for x
    x = 869,972,528.32/28,262.92
  6. Step 6: Final answer
    x = 30,781.41

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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.