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Finding the Fourth Proportional to 14,459.43, 19,960.50 and 8,491.47

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Solution

The fourth proportional to 14,459.43, 19,960.50 and 8,491.47 is: 11,722.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,459.43 : 19,960.50 = 8,491.47 : x
  2. Step 2: Convert to fraction form
    14,459.43/19,960.50 = 8,491.47/x
  3. Step 3: Cross multiply
    14,459.43x = 19,960.50 × 8,491.47
  4. Step 4: Simplify right side
    14,459.43x = 169,493,986.94
  5. Step 5: Solve for x
    x = 169,493,986.94/14,459.43
  6. Step 6: Final answer
    x = 11,722.04

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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.