Home / 27,662.80-38,171.06-15,725.88

Finding the Fourth Proportional to 27,662.80, 38,171.06 and 15,725.88

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Solution

The fourth proportional to 27,662.80, 38,171.06 and 15,725.88 is: 21,699.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,662.80 : 38,171.06 = 15,725.88 : x
  2. Step 2: Convert to fraction form
    27,662.80/38,171.06 = 15,725.88/x
  3. Step 3: Cross multiply
    27,662.80x = 38,171.06 × 15,725.88
  4. Step 4: Simplify right side
    27,662.80x = 600,273,509.03
  5. Step 5: Solve for x
    x = 600,273,509.03/27,662.80
  6. Step 6: Final answer
    x = 21,699.67

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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.