Home / 21,447.35-29,596.55-11,887.64

Finding the Fourth Proportional to 21,447.35, 29,596.55 and 11,887.64

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Solution

The fourth proportional to 21,447.35, 29,596.55 and 11,887.64 is: 16,404.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,447.35 : 29,596.55 = 11,887.64 : x
  2. Step 2: Convert to fraction form
    21,447.35/29,596.55 = 11,887.64/x
  3. Step 3: Cross multiply
    21,447.35x = 29,596.55 × 11,887.64
  4. Step 4: Simplify right side
    21,447.35x = 351,832,924.22
  5. Step 5: Solve for x
    x = 351,832,924.22/21,447.35
  6. Step 6: Final answer
    x = 16,404.50

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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.