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Finding the Fourth Proportional to 12,817.71, 19,217.01 and 8,646.03

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Solution

The fourth proportional to 12,817.71, 19,217.01 and 8,646.03 is: 12,962.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,817.71 : 19,217.01 = 8,646.03 : x
  2. Step 2: Convert to fraction form
    12,817.71/19,217.01 = 8,646.03/x
  3. Step 3: Cross multiply
    12,817.71x = 19,217.01 × 8,646.03
  4. Step 4: Simplify right side
    12,817.71x = 166,150,844.97
  5. Step 5: Solve for x
    x = 166,150,844.97/12,817.71
  6. Step 6: Final answer
    x = 12,962.60

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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.