Home / 11,921.56-17,882.13-4,904.80

Finding the Fourth Proportional to 11,921.56, 17,882.13 and 4,904.80

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Solution

The fourth proportional to 11,921.56, 17,882.13 and 4,904.80 is: 7,357.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.56 : 17,882.13 = 4,904.80 : x
  2. Step 2: Convert to fraction form
    11,921.56/17,882.13 = 4,904.80/x
  3. Step 3: Cross multiply
    11,921.56x = 17,882.13 × 4,904.80
  4. Step 4: Simplify right side
    11,921.56x = 87,708,271.22
  5. Step 5: Solve for x
    x = 87,708,271.22/11,921.56
  6. Step 6: Final answer
    x = 7,357.11

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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.