Home / 15,174.72-20,940.78-8,459.94

Finding the Fourth Proportional to 15,174.72, 20,940.78 and 8,459.94

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Solution

The fourth proportional to 15,174.72, 20,940.78 and 8,459.94 is: 11,674.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,174.72 : 20,940.78 = 8,459.94 : x
  2. Step 2: Convert to fraction form
    15,174.72/20,940.78 = 8,459.94/x
  3. Step 3: Cross multiply
    15,174.72x = 20,940.78 × 8,459.94
  4. Step 4: Simplify right side
    15,174.72x = 177,157,742.35
  5. Step 5: Solve for x
    x = 177,157,742.35/15,174.72
  6. Step 6: Final answer
    x = 11,674.53

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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.