Home / 13,072.20-19,613.10-5,281.80

Finding the Fourth Proportional to 13,072.20, 19,613.10 and 5,281.80

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Solution

The fourth proportional to 13,072.20, 19,613.10 and 5,281.80 is: 7,924.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,072.20 : 19,613.10 = 5,281.80 : x
  2. Step 2: Convert to fraction form
    13,072.20/19,613.10 = 5,281.80/x
  3. Step 3: Cross multiply
    13,072.20x = 19,613.10 × 5,281.80
  4. Step 4: Simplify right side
    13,072.20x = 103,592,471.58
  5. Step 5: Solve for x
    x = 103,592,471.58/13,072.20
  6. Step 6: Final answer
    x = 7,924.64

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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.