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Finding the Fourth Proportional to 13,299.96, 19,968.18 and 8,354.91

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Solution

The fourth proportional to 13,299.96, 19,968.18 and 8,354.91 is: 12,543.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299.96 : 19,968.18 = 8,354.91 : x
  2. Step 2: Convert to fraction form
    13,299.96/19,968.18 = 8,354.91/x
  3. Step 3: Cross multiply
    13,299.96x = 19,968.18 × 8,354.91
  4. Step 4: Simplify right side
    13,299.96x = 166,832,346.76
  5. Step 5: Solve for x
    x = 166,832,346.76/13,299.96
  6. Step 6: Final answer
    x = 12,543.82

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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.