Home / 28,198.40-42,228.48-18,936.32

Finding the Fourth Proportional to 28,198.40, 42,228.48 and 18,936.32

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Solution

The fourth proportional to 28,198.40, 42,228.48 and 18,936.32 is: 28,358.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,198.40 : 42,228.48 = 18,936.32 : x
  2. Step 2: Convert to fraction form
    28,198.40/42,228.48 = 18,936.32/x
  3. Step 3: Cross multiply
    28,198.40x = 42,228.48 × 18,936.32
  4. Step 4: Simplify right side
    28,198.40x = 799,652,010.39
  5. Step 5: Solve for x
    x = 799,652,010.39/28,198.40
  6. Step 6: Final answer
    x = 28,358.06

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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.