Home / 15,204.99-20,982.51-8,491.23

Finding the Fourth Proportional to 15,204.99, 20,982.51 and 8,491.23

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Solution

The fourth proportional to 15,204.99, 20,982.51 and 8,491.23 is: 11,717.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,204.99 : 20,982.51 = 8,491.23 : x
  2. Step 2: Convert to fraction form
    15,204.99/20,982.51 = 8,491.23/x
  3. Step 3: Cross multiply
    15,204.99x = 20,982.51 × 8,491.23
  4. Step 4: Simplify right side
    15,204.99x = 178,167,318.39
  5. Step 5: Solve for x
    x = 178,167,318.39/15,204.99
  6. Step 6: Final answer
    x = 11,717.69

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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.