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Finding the Fourth Proportional to 13,484.35, 18,602.91 and 8,169.94

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Solution

The fourth proportional to 13,484.35, 18,602.91 and 8,169.94 is: 11,271.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,484.35 : 18,602.91 = 8,169.94 : x
  2. Step 2: Convert to fraction form
    13,484.35/18,602.91 = 8,169.94/x
  3. Step 3: Cross multiply
    13,484.35x = 18,602.91 × 8,169.94
  4. Step 4: Simplify right side
    13,484.35x = 151,984,658.53
  5. Step 5: Solve for x
    x = 151,984,658.53/13,484.35
  6. Step 6: Final answer
    x = 11,271.19

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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.