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Finding the Fourth Proportional to 11,155.35, 15,393.93 and 6,676.47

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Solution

The fourth proportional to 11,155.35, 15,393.93 and 6,676.47 is: 9,213.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,155.35 : 15,393.93 = 6,676.47 : x
  2. Step 2: Convert to fraction form
    11,155.35/15,393.93 = 6,676.47/x
  3. Step 3: Cross multiply
    11,155.35x = 15,393.93 × 6,676.47
  4. Step 4: Simplify right side
    11,155.35x = 102,777,111.83
  5. Step 5: Solve for x
    x = 102,777,111.83/11,155.35
  6. Step 6: Final answer
    x = 9,213.26

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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.