Home / 27,871.58-38,462.46-15,771.92

Finding the Fourth Proportional to 27,871.58, 38,462.46 and 15,771.92

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Solution

The fourth proportional to 27,871.58, 38,462.46 and 15,771.92 is: 21,765.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,871.58 : 38,462.46 = 15,771.92 : x
  2. Step 2: Convert to fraction form
    27,871.58/38,462.46 = 15,771.92/x
  3. Step 3: Cross multiply
    27,871.58x = 38,462.46 × 15,771.92
  4. Step 4: Simplify right side
    27,871.58x = 606,626,842.12
  5. Step 5: Solve for x
    x = 606,626,842.12/27,871.58
  6. Step 6: Final answer
    x = 21,765.07

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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.