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Finding the Fourth Proportional to 13,651.71, 20,482.56 and 5,756.22

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Solution

The fourth proportional to 13,651.71, 20,482.56 and 5,756.22 is: 8,636.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,651.71 : 20,482.56 = 5,756.22 : x
  2. Step 2: Convert to fraction form
    13,651.71/20,482.56 = 5,756.22/x
  3. Step 3: Cross multiply
    13,651.71x = 20,482.56 × 5,756.22
  4. Step 4: Simplify right side
    13,651.71x = 117,902,121.52
  5. Step 5: Solve for x
    x = 117,902,121.52/13,651.71
  6. Step 6: Final answer
    x = 8,636.44

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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.