Home / 21,236.79-29,307.12-11,677.11

Finding the Fourth Proportional to 21,236.79, 29,307.12 and 11,677.11

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Solution

The fourth proportional to 21,236.79, 29,307.12 and 11,677.11 is: 16,114.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,236.79 : 29,307.12 = 11,677.11 : x
  2. Step 2: Convert to fraction form
    21,236.79/29,307.12 = 11,677.11/x
  3. Step 3: Cross multiply
    21,236.79x = 29,307.12 × 11,677.11
  4. Step 4: Simplify right side
    21,236.79x = 342,222,310.33
  5. Step 5: Solve for x
    x = 342,222,310.33/21,236.79
  6. Step 6: Final answer
    x = 16,114.59

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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.