Home / 14,169.98-21,255.68-5,405.58

Finding the Fourth Proportional to 14,169.98, 21,255.68 and 5,405.58

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Solution

The fourth proportional to 14,169.98, 21,255.68 and 5,405.58 is: 8,108.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,169.98 : 21,255.68 = 5,405.58 : x
  2. Step 2: Convert to fraction form
    14,169.98/21,255.68 = 5,405.58/x
  3. Step 3: Cross multiply
    14,169.98x = 21,255.68 × 5,405.58
  4. Step 4: Simplify right side
    14,169.98x = 114,899,278.69
  5. Step 5: Solve for x
    x = 114,899,278.69/14,169.98
  6. Step 6: Final answer
    x = 8,108.64

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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.