Home / 14,425.40-21,645.30-8,190.20

Finding the Fourth Proportional to 14,425.40, 21,645.30 and 8,190.20

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Solution

The fourth proportional to 14,425.40, 21,645.30 and 8,190.20 is: 12,289.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,425.40 : 21,645.30 = 8,190.20 : x
  2. Step 2: Convert to fraction form
    14,425.40/21,645.30 = 8,190.20/x
  3. Step 3: Cross multiply
    14,425.40x = 21,645.30 × 8,190.20
  4. Step 4: Simplify right side
    14,425.40x = 177,279,336.06
  5. Step 5: Solve for x
    x = 177,279,336.06/14,425.40
  6. Step 6: Final answer
    x = 12,289.39

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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.