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Finding the Fourth Proportional to 11,888.22, 17,836.38 and 7,955.40

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Solution

The fourth proportional to 11,888.22, 17,836.38 and 7,955.40 is: 11,935.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,888.22 : 17,836.38 = 7,955.40 : x
  2. Step 2: Convert to fraction form
    11,888.22/17,836.38 = 7,955.40/x
  3. Step 3: Cross multiply
    11,888.22x = 17,836.38 × 7,955.40
  4. Step 4: Simplify right side
    11,888.22x = 141,895,537.45
  5. Step 5: Solve for x
    x = 141,895,537.45/11,888.22
  6. Step 6: Final answer
    x = 11,935.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.