Home / 13,138.04-19,714.92-5,239.16

Finding the Fourth Proportional to 13,138.04, 19,714.92 and 5,239.16

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Solution

The fourth proportional to 13,138.04, 19,714.92 and 5,239.16 is: 7,861.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138.04 : 19,714.92 = 5,239.16 : x
  2. Step 2: Convert to fraction form
    13,138.04/19,714.92 = 5,239.16/x
  3. Step 3: Cross multiply
    13,138.04x = 19,714.92 × 5,239.16
  4. Step 4: Simplify right side
    13,138.04x = 103,289,620.27
  5. Step 5: Solve for x
    x = 103,289,620.27/13,138.04
  6. Step 6: Final answer
    x = 7,861.87

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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.