Home / 27,708.28-38,239.37-15,771.61

Finding the Fourth Proportional to 27,708.28, 38,239.37 and 15,771.61

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Solution

The fourth proportional to 27,708.28, 38,239.37 and 15,771.61 is: 21,765.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,708.28 : 38,239.37 = 15,771.61 : x
  2. Step 2: Convert to fraction form
    27,708.28/38,239.37 = 15,771.61/x
  3. Step 3: Cross multiply
    27,708.28x = 38,239.37 × 15,771.61
  4. Step 4: Simplify right side
    27,708.28x = 603,096,430.29
  5. Step 5: Solve for x
    x = 603,096,430.29/27,708.28
  6. Step 6: Final answer
    x = 21,765.93

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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.