Home / 27,708.53-38,239.72-15,771.86

Finding the Fourth Proportional to 27,708.53, 38,239.72 and 15,771.86

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Solution

The fourth proportional to 27,708.53, 38,239.72 and 15,771.86 is: 21,766.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,708.53 : 38,239.72 = 15,771.86 : x
  2. Step 2: Convert to fraction form
    27,708.53/38,239.72 = 15,771.86/x
  3. Step 3: Cross multiply
    27,708.53x = 38,239.72 × 15,771.86
  4. Step 4: Simplify right side
    27,708.53x = 603,111,431.42
  5. Step 5: Solve for x
    x = 603,111,431.42/27,708.53
  6. Step 6: Final answer
    x = 21,766.28

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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.