Home / 13,431.23-18,529.13-8,950.62

Finding the Fourth Proportional to 13,431.23, 18,529.13 and 8,950.62

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Solution

The fourth proportional to 13,431.23, 18,529.13 and 8,950.62 is: 12,347.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.23 : 18,529.13 = 8,950.62 : x
  2. Step 2: Convert to fraction form
    13,431.23/18,529.13 = 8,950.62/x
  3. Step 3: Cross multiply
    13,431.23x = 18,529.13 × 8,950.62
  4. Step 4: Simplify right side
    13,431.23x = 165,847,201.56
  5. Step 5: Solve for x
    x = 165,847,201.56/13,431.23
  6. Step 6: Final answer
    x = 12,347.88

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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.