Home / 10,621.26-14,649.66-8,189.64

Finding the Fourth Proportional to 10,621.26, 14,649.66 and 8,189.64

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Solution

The fourth proportional to 10,621.26, 14,649.66 and 8,189.64 is: 11,295.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.26 : 14,649.66 = 8,189.64 : x
  2. Step 2: Convert to fraction form
    10,621.26/14,649.66 = 8,189.64/x
  3. Step 3: Cross multiply
    10,621.26x = 14,649.66 × 8,189.64
  4. Step 4: Simplify right side
    10,621.26x = 119,975,441.52
  5. Step 5: Solve for x
    x = 119,975,441.52/10,621.26
  6. Step 6: Final answer
    x = 11,295.78

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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.