Home / 13,425.81-20,133.91-5,103.61

Finding the Fourth Proportional to 13,425.81, 20,133.91 and 5,103.61

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Solution

The fourth proportional to 13,425.81, 20,133.91 and 5,103.61 is: 7,653.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.81 : 20,133.91 = 5,103.61 : x
  2. Step 2: Convert to fraction form
    13,425.81/20,133.91 = 5,103.61/x
  3. Step 3: Cross multiply
    13,425.81x = 20,133.91 × 5,103.61
  4. Step 4: Simplify right side
    13,425.81x = 102,755,624.42
  5. Step 5: Solve for x
    x = 102,755,624.42/13,425.81
  6. Step 6: Final answer
    x = 7,653.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.