Home / 13,491.78-20,208.24-11,125.23

Finding the Fourth Proportional to 13,491.78, 20,208.24 and 11,125.23

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Solution

The fourth proportional to 13,491.78, 20,208.24 and 11,125.23 is: 16,663.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,491.78 : 20,208.24 = 11,125.23 : x
  2. Step 2: Convert to fraction form
    13,491.78/20,208.24 = 11,125.23/x
  3. Step 3: Cross multiply
    13,491.78x = 20,208.24 × 11,125.23
  4. Step 4: Simplify right side
    13,491.78x = 224,821,317.90
  5. Step 5: Solve for x
    x = 224,821,317.90/13,491.78
  6. Step 6: Final answer
    x = 16,663.58

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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.