Home / 13,013.90-19,520.24-4,247.68

Finding the Fourth Proportional to 13,013.90, 19,520.24 and 4,247.68

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Solution

The fourth proportional to 13,013.90, 19,520.24 and 4,247.68 is: 6,371.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,013.90 : 19,520.24 = 4,247.68 : x
  2. Step 2: Convert to fraction form
    13,013.90/19,520.24 = 4,247.68/x
  3. Step 3: Cross multiply
    13,013.90x = 19,520.24 × 4,247.68
  4. Step 4: Simplify right side
    13,013.90x = 82,915,733.04
  5. Step 5: Solve for x
    x = 82,915,733.04/13,013.90
  6. Step 6: Final answer
    x = 6,371.32

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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.