Home / 11,987.05-16,534.41-7,953.79

Finding the Fourth Proportional to 11,987.05, 16,534.41 and 7,953.79

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Solution

The fourth proportional to 11,987.05, 16,534.41 and 7,953.79 is: 10,971.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.05 : 16,534.41 = 7,953.79 : x
  2. Step 2: Convert to fraction form
    11,987.05/16,534.41 = 7,953.79/x
  3. Step 3: Cross multiply
    11,987.05x = 16,534.41 × 7,953.79
  4. Step 4: Simplify right side
    11,987.05x = 131,511,153.75
  5. Step 5: Solve for x
    x = 131,511,153.75/11,987.05
  6. Step 6: Final answer
    x = 10,971.10

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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.