Home / 15,206.42-20,982.30-8,491.80

Finding the Fourth Proportional to 15,206.42, 20,982.30 and 8,491.80

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Solution

The fourth proportional to 15,206.42, 20,982.30 and 8,491.80 is: 11,717.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,206.42 : 20,982.30 = 8,491.80 : x
  2. Step 2: Convert to fraction form
    15,206.42/20,982.30 = 8,491.80/x
  3. Step 3: Cross multiply
    15,206.42x = 20,982.30 × 8,491.80
  4. Step 4: Simplify right side
    15,206.42x = 178,177,495.14
  5. Step 5: Solve for x
    x = 178,177,495.14/15,206.42
  6. Step 6: Final answer
    x = 11,717.25

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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.