Home / 11,838.88-16,340.52-7,122.25

Finding the Fourth Proportional to 11,838.88, 16,340.52 and 7,122.25

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Solution

The fourth proportional to 11,838.88, 16,340.52 and 7,122.25 is: 9,830.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,838.88 : 16,340.52 = 7,122.25 : x
  2. Step 2: Convert to fraction form
    11,838.88/16,340.52 = 7,122.25/x
  3. Step 3: Cross multiply
    11,838.88x = 16,340.52 × 7,122.25
  4. Step 4: Simplify right side
    11,838.88x = 116,381,268.57
  5. Step 5: Solve for x
    x = 116,381,268.57/11,838.88
  6. Step 6: Final answer
    x = 9,830.43

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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.