Home / 13,438.29-18,553.13-8,659.92

Finding the Fourth Proportional to 13,438.29, 18,553.13 and 8,659.92

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Solution

The fourth proportional to 13,438.29, 18,553.13 and 8,659.92 is: 11,956.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.29 : 18,553.13 = 8,659.92 : x
  2. Step 2: Convert to fraction form
    13,438.29/18,553.13 = 8,659.92/x
  3. Step 3: Cross multiply
    13,438.29x = 18,553.13 × 8,659.92
  4. Step 4: Simplify right side
    13,438.29x = 160,668,621.55
  5. Step 5: Solve for x
    x = 160,668,621.55/13,438.29
  6. Step 6: Final answer
    x = 11,956.03

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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.