Home / 13,427.61-20,141.43-5,105.67

Finding the Fourth Proportional to 13,427.61, 20,141.43 and 5,105.67

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Solution

The fourth proportional to 13,427.61, 20,141.43 and 5,105.67 is: 7,658.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.61 : 20,141.43 = 5,105.67 : x
  2. Step 2: Convert to fraction form
    13,427.61/20,141.43 = 5,105.67/x
  3. Step 3: Cross multiply
    13,427.61x = 20,141.43 × 5,105.67
  4. Step 4: Simplify right side
    13,427.61x = 102,835,494.91
  5. Step 5: Solve for x
    x = 102,835,494.91/13,427.61
  6. Step 6: Final answer
    x = 7,658.51

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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.