Home / 13,640.04-20,462.70-5,319.72

Finding the Fourth Proportional to 13,640.04, 20,462.70 and 5,319.72

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Solution

The fourth proportional to 13,640.04, 20,462.70 and 5,319.72 is: 7,980.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,640.04 : 20,462.70 = 5,319.72 : x
  2. Step 2: Convert to fraction form
    13,640.04/20,462.70 = 5,319.72/x
  3. Step 3: Cross multiply
    13,640.04x = 20,462.70 × 5,319.72
  4. Step 4: Simplify right side
    13,640.04x = 108,855,834.44
  5. Step 5: Solve for x
    x = 108,855,834.44/13,640.04
  6. Step 6: Final answer
    x = 7,980.61

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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.