Home / 13,123.03-19,680.09-5,221.75

Finding the Fourth Proportional to 13,123.03, 19,680.09 and 5,221.75

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Solution

The fourth proportional to 13,123.03, 19,680.09 and 5,221.75 is: 7,830.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,123.03 : 19,680.09 = 5,221.75 : x
  2. Step 2: Convert to fraction form
    13,123.03/19,680.09 = 5,221.75/x
  3. Step 3: Cross multiply
    13,123.03x = 19,680.09 × 5,221.75
  4. Step 4: Simplify right side
    13,123.03x = 102,764,509.96
  5. Step 5: Solve for x
    x = 102,764,509.96/13,123.03
  6. Step 6: Final answer
    x = 7,830.85

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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.