Home / 11,991.28-17,988.84-5,065.84

Finding the Fourth Proportional to 11,991.28, 17,988.84 and 5,065.84

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Solution

The fourth proportional to 11,991.28, 17,988.84 and 5,065.84 is: 7,599.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.28 : 17,988.84 = 5,065.84 : x
  2. Step 2: Convert to fraction form
    11,991.28/17,988.84 = 5,065.84/x
  3. Step 3: Cross multiply
    11,991.28x = 17,988.84 × 5,065.84
  4. Step 4: Simplify right side
    11,991.28x = 91,128,585.23
  5. Step 5: Solve for x
    x = 91,128,585.23/11,991.28
  6. Step 6: Final answer
    x = 7,599.57

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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.