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Finding the Fourth Proportional to 12,675.70, 17,486.64 and 8,200.89

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Solution

The fourth proportional to 12,675.70, 17,486.64 and 8,200.89 is: 11,313.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,675.70 : 17,486.64 = 8,200.89 : x
  2. Step 2: Convert to fraction form
    12,675.70/17,486.64 = 8,200.89/x
  3. Step 3: Cross multiply
    12,675.70x = 17,486.64 × 8,200.89
  4. Step 4: Simplify right side
    12,675.70x = 143,406,011.11
  5. Step 5: Solve for x
    x = 143,406,011.11/12,675.70
  6. Step 6: Final answer
    x = 11,313.46

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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.