Home / 15,170.30-20,935.42-8,455.58

Finding the Fourth Proportional to 15,170.30, 20,935.42 and 8,455.58

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Solution

The fourth proportional to 15,170.30, 20,935.42 and 8,455.58 is: 11,668.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,170.30 : 20,935.42 = 8,455.58 : x
  2. Step 2: Convert to fraction form
    15,170.30/20,935.42 = 8,455.58/x
  3. Step 3: Cross multiply
    15,170.30x = 20,935.42 × 8,455.58
  4. Step 4: Simplify right side
    15,170.30x = 177,021,118.64
  5. Step 5: Solve for x
    x = 177,021,118.64/15,170.30
  6. Step 6: Final answer
    x = 11,668.93

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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.