Home / 11,891.76-16,418.52-11,148.36

Finding the Fourth Proportional to 11,891.76, 16,418.52 and 11,148.36

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Solution

The fourth proportional to 11,891.76, 16,418.52 and 11,148.36 is: 15,392.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,891.76 : 16,418.52 = 11,148.36 : x
  2. Step 2: Convert to fraction form
    11,891.76/16,418.52 = 11,148.36/x
  3. Step 3: Cross multiply
    11,891.76x = 16,418.52 × 11,148.36
  4. Step 4: Simplify right side
    11,891.76x = 183,039,571.63
  5. Step 5: Solve for x
    x = 183,039,571.63/11,891.76
  6. Step 6: Final answer
    x = 15,392.13

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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.