Home / 15,934.32-21,991.50-11,949.12

Finding the Fourth Proportional to 15,934.32, 21,991.50 and 11,949.12

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Solution

The fourth proportional to 15,934.32, 21,991.50 and 11,949.12 is: 16,491.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,934.32 : 21,991.50 = 11,949.12 : x
  2. Step 2: Convert to fraction form
    15,934.32/21,991.50 = 11,949.12/x
  3. Step 3: Cross multiply
    15,934.32x = 21,991.50 × 11,949.12
  4. Step 4: Simplify right side
    15,934.32x = 262,779,072.48
  5. Step 5: Solve for x
    x = 262,779,072.48/15,934.32
  6. Step 6: Final answer
    x = 16,491.39

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Similar ratio
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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.