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Finding the Fourth Proportional to 11,189.94, 15,445.02 and 6,476.94

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Solution

The fourth proportional to 11,189.94, 15,445.02 and 6,476.94 is: 8,939.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,189.94 : 15,445.02 = 6,476.94 : x
  2. Step 2: Convert to fraction form
    11,189.94/15,445.02 = 6,476.94/x
  3. Step 3: Cross multiply
    11,189.94x = 15,445.02 × 6,476.94
  4. Step 4: Simplify right side
    11,189.94x = 100,036,467.84
  5. Step 5: Solve for x
    x = 100,036,467.84/11,189.94
  6. Step 6: Final answer
    x = 8,939.86

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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.