Home / 13,389.01-18,477.30-8,082.79

Finding the Fourth Proportional to 13,389.01, 18,477.30 and 8,082.79

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Solution

The fourth proportional to 13,389.01, 18,477.30 and 8,082.79 is: 11,154.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.01 : 18,477.30 = 8,082.79 : x
  2. Step 2: Convert to fraction form
    13,389.01/18,477.30 = 8,082.79/x
  3. Step 3: Cross multiply
    13,389.01x = 18,477.30 × 8,082.79
  4. Step 4: Simplify right side
    13,389.01x = 149,348,135.67
  5. Step 5: Solve for x
    x = 149,348,135.67/13,389.01
  6. Step 6: Final answer
    x = 11,154.53

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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.