Home / 13,695.18-18,882.21-11,429.79

Finding the Fourth Proportional to 13,695.18, 18,882.21 and 11,429.79

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Solution

The fourth proportional to 13,695.18, 18,882.21 and 11,429.79 is: 15,758.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,695.18 : 18,882.21 = 11,429.79 : x
  2. Step 2: Convert to fraction form
    13,695.18/18,882.21 = 11,429.79/x
  3. Step 3: Cross multiply
    13,695.18x = 18,882.21 × 11,429.79
  4. Step 4: Simplify right side
    13,695.18x = 215,819,695.04
  5. Step 5: Solve for x
    x = 215,819,695.04/13,695.18
  6. Step 6: Final answer
    x = 15,758.81

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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.