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Finding the Fourth Proportional to 12,173.81, 16,798.93 and 6,869.12

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Solution

The fourth proportional to 12,173.81, 16,798.93 and 6,869.12 is: 9,478.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,173.81 : 16,798.93 = 6,869.12 : x
  2. Step 2: Convert to fraction form
    12,173.81/16,798.93 = 6,869.12/x
  3. Step 3: Cross multiply
    12,173.81x = 16,798.93 × 6,869.12
  4. Step 4: Simplify right side
    12,173.81x = 115,393,764.87
  5. Step 5: Solve for x
    x = 115,393,764.87/12,173.81
  6. Step 6: Final answer
    x = 9,478.86

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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.