Home / 13,154.76-18,157.23-8,119.80

Finding the Fourth Proportional to 13,154.76, 18,157.23 and 8,119.80

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Solution

The fourth proportional to 13,154.76, 18,157.23 and 8,119.80 is: 11,207.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,154.76 : 18,157.23 = 8,119.80 : x
  2. Step 2: Convert to fraction form
    13,154.76/18,157.23 = 8,119.80/x
  3. Step 3: Cross multiply
    13,154.76x = 18,157.23 × 8,119.80
  4. Step 4: Simplify right side
    13,154.76x = 147,433,076.15
  5. Step 5: Solve for x
    x = 147,433,076.15/13,154.76
  6. Step 6: Final answer
    x = 11,207.58

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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.