Home / 14,420.58-21,617.91-5,661.78

Finding the Fourth Proportional to 14,420.58, 21,617.91 and 5,661.78

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Solution

The fourth proportional to 14,420.58, 21,617.91 and 5,661.78 is: 8,487.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,420.58 : 21,617.91 = 5,661.78 : x
  2. Step 2: Convert to fraction form
    14,420.58/21,617.91 = 5,661.78/x
  3. Step 3: Cross multiply
    14,420.58x = 21,617.91 × 5,661.78
  4. Step 4: Simplify right side
    14,420.58x = 122,395,850.48
  5. Step 5: Solve for x
    x = 122,395,850.48/14,420.58
  6. Step 6: Final answer
    x = 8,487.58

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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.