Home / 28,221.04-42,338.62-19,917.26

Finding the Fourth Proportional to 28,221.04, 42,338.62 and 19,917.26

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Solution

The fourth proportional to 28,221.04, 42,338.62 and 19,917.26 is: 29,880.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,221.04 : 42,338.62 = 19,917.26 : x
  2. Step 2: Convert to fraction form
    28,221.04/42,338.62 = 19,917.26/x
  3. Step 3: Cross multiply
    28,221.04x = 42,338.62 × 19,917.26
  4. Step 4: Simplify right side
    28,221.04x = 843,269,302.58
  5. Step 5: Solve for x
    x = 843,269,302.58/28,221.04
  6. Step 6: Final answer
    x = 29,880.87

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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.