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Finding the Fourth Proportional to 14,599.71, 20,147.94 and 8,636.49

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Solution

The fourth proportional to 14,599.71, 20,147.94 and 8,636.49 is: 11,918.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,599.71 : 20,147.94 = 8,636.49 : x
  2. Step 2: Convert to fraction form
    14,599.71/20,147.94 = 8,636.49/x
  3. Step 3: Cross multiply
    14,599.71x = 20,147.94 × 8,636.49
  4. Step 4: Simplify right side
    14,599.71x = 174,007,482.33
  5. Step 5: Solve for x
    x = 174,007,482.33/14,599.71
  6. Step 6: Final answer
    x = 11,918.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.