Home / 13,388.13-18,475.67-8,082.99

Finding the Fourth Proportional to 13,388.13, 18,475.67 and 8,082.99

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Solution

The fourth proportional to 13,388.13, 18,475.67 and 8,082.99 is: 11,154.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.13 : 18,475.67 = 8,082.99 : x
  2. Step 2: Convert to fraction form
    13,388.13/18,475.67 = 8,082.99/x
  3. Step 3: Cross multiply
    13,388.13x = 18,475.67 × 8,082.99
  4. Step 4: Simplify right side
    13,388.13x = 149,338,615.44
  5. Step 5: Solve for x
    x = 149,338,615.44/13,388.13
  6. Step 6: Final answer
    x = 11,154.55

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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.