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Finding the Fourth Proportional to 11,639.58, 16,085.43 and 10,343.58

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Solution

The fourth proportional to 11,639.58, 16,085.43 and 10,343.58 is: 14,294.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,639.58 : 16,085.43 = 10,343.58 : x
  2. Step 2: Convert to fraction form
    11,639.58/16,085.43 = 10,343.58/x
  3. Step 3: Cross multiply
    11,639.58x = 16,085.43 × 10,343.58
  4. Step 4: Simplify right side
    11,639.58x = 166,380,932.04
  5. Step 5: Solve for x
    x = 166,380,932.04/11,639.58
  6. Step 6: Final answer
    x = 14,294.41

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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.