Home / 27,815.04-38,388.96-15,879.60

Finding the Fourth Proportional to 27,815.04, 38,388.96 and 15,879.60

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Solution

The fourth proportional to 27,815.04, 38,388.96 and 15,879.60 is: 21,916.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,815.04 : 38,388.96 = 15,879.60 : x
  2. Step 2: Convert to fraction form
    27,815.04/38,388.96 = 15,879.60/x
  3. Step 3: Cross multiply
    27,815.04x = 38,388.96 × 15,879.60
  4. Step 4: Simplify right side
    27,815.04x = 609,601,329.22
  5. Step 5: Solve for x
    x = 609,601,329.22/27,815.04
  6. Step 6: Final answer
    x = 21,916.25

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.