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Finding the Fourth Proportional to 12,672.99, 18,983.97 and 10,613.57

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Solution

The fourth proportional to 12,672.99, 18,983.97 and 10,613.57 is: 15,898.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672.99 : 18,983.97 = 10,613.57 : x
  2. Step 2: Convert to fraction form
    12,672.99/18,983.97 = 10,613.57/x
  3. Step 3: Cross multiply
    12,672.99x = 18,983.97 × 10,613.57
  4. Step 4: Simplify right side
    12,672.99x = 201,487,599.55
  5. Step 5: Solve for x
    x = 201,487,599.55/12,672.99
  6. Step 6: Final answer
    x = 15,898.98

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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.