Home / 27,771.90-38,325.12-15,196.62

Finding the Fourth Proportional to 27,771.90, 38,325.12 and 15,196.62

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Solution

The fourth proportional to 27,771.90, 38,325.12 and 15,196.62 is: 20,971.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,771.90 : 38,325.12 = 15,196.62 : x
  2. Step 2: Convert to fraction form
    27,771.90/38,325.12 = 15,196.62/x
  3. Step 3: Cross multiply
    27,771.90x = 38,325.12 × 15,196.62
  4. Step 4: Simplify right side
    27,771.90x = 582,412,285.09
  5. Step 5: Solve for x
    x = 582,412,285.09/27,771.90
  6. Step 6: Final answer
    x = 20,971.28

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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.