Home / 15,169.34-20,933-8,455.70

Finding the Fourth Proportional to 15,169.34, 20,933 and 8,455.70

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Solution

The fourth proportional to 15,169.34, 20,933 and 8,455.70 is: 11,668.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,169.34 : 20,933 = 8,455.70 : x
  2. Step 2: Convert to fraction form
    15,169.34/20,933 = 8,455.70/x
  3. Step 3: Cross multiply
    15,169.34x = 20,933 × 8,455.70
  4. Step 4: Simplify right side
    15,169.34x = 177,003,168.10
  5. Step 5: Solve for x
    x = 177,003,168.10/15,169.34
  6. Step 6: Final answer
    x = 11,668.48

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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.