Home / 27,713.78-38,243.58-15,777.08

Finding the Fourth Proportional to 27,713.78, 38,243.58 and 15,777.08

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Solution

The fourth proportional to 27,713.78, 38,243.58 and 15,777.08 is: 21,771.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,713.78 : 38,243.58 = 15,777.08 : x
  2. Step 2: Convert to fraction form
    27,713.78/38,243.58 = 15,777.08/x
  3. Step 3: Cross multiply
    27,713.78x = 38,243.58 × 15,777.08
  4. Step 4: Simplify right side
    27,713.78x = 603,372,021.15
  5. Step 5: Solve for x
    x = 603,372,021.15/27,713.78
  6. Step 6: Final answer
    x = 21,771.55

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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.