Home / 28,120.36-42,179.49-7,060.54

Finding the Fourth Proportional to 28,120.36, 42,179.49 and 7,060.54

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Solution

The fourth proportional to 28,120.36, 42,179.49 and 7,060.54 is: 10,590.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.36 : 42,179.49 = 7,060.54 : x
  2. Step 2: Convert to fraction form
    28,120.36/42,179.49 = 7,060.54/x
  3. Step 3: Cross multiply
    28,120.36x = 42,179.49 × 7,060.54
  4. Step 4: Simplify right side
    28,120.36x = 297,809,976.32
  5. Step 5: Solve for x
    x = 297,809,976.32/28,120.36
  6. Step 6: Final answer
    x = 10,590.55

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Half scale
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Double scale
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Similar ratio
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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.