Home / 21,236.64-29,307.60-11,805

Finding the Fourth Proportional to 21,236.64, 29,307.60 and 11,805

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Solution

The fourth proportional to 21,236.64, 29,307.60 and 11,805 is: 16,291.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,236.64 : 29,307.60 = 11,805 : x
  2. Step 2: Convert to fraction form
    21,236.64/29,307.60 = 11,805/x
  3. Step 3: Cross multiply
    21,236.64x = 29,307.60 × 11,805
  4. Step 4: Simplify right side
    21,236.64x = 345,976,218
  5. Step 5: Solve for x
    x = 345,976,218/21,236.64
  6. Step 6: Final answer
    x = 16,291.48

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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.