Home / 11,949.72-16,483.77-9,921.66

Finding the Fourth Proportional to 11,949.72, 16,483.77 and 9,921.66

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Solution

The fourth proportional to 11,949.72, 16,483.77 and 9,921.66 is: 13,686.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,949.72 : 16,483.77 = 9,921.66 : x
  2. Step 2: Convert to fraction form
    11,949.72/16,483.77 = 9,921.66/x
  3. Step 3: Cross multiply
    11,949.72x = 16,483.77 × 9,921.66
  4. Step 4: Simplify right side
    11,949.72x = 163,546,361.46
  5. Step 5: Solve for x
    x = 163,546,361.46/11,949.72
  6. Step 6: Final answer
    x = 13,686.21

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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.